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📊 Churn Analysis Project

📌 Overview

This is an end-to-end churn analysis pipeline built using SQL Server Management Studio 21 (SSMS 21), Power BI, and Python.
The project helps businesses understand churn patterns, build predictive insights, and design proactive strategies to reduce customer churn.


🎯 Problem Statement

Customer churn — when customers stop using a service — leads to significant revenue loss. Businesses need to:

  • Identify customers at risk of leaving
  • Understand key churn drivers
  • Take proactive actions to retain them

This project provides a data-driven churn analysis solution by combining SQL, Power BI, and Python.


🛠️ Tech Stack

  • SQL Server Management Studio 21 (SSMS 21): ETL, data cleaning, preprocessing, and view creation
  • Power BI: Data transformation, modeling, and interactive dashboards
  • Python (Pandas, NumPy, Matplotlib, Scikit-learn): Exploratory Data Analysis (EDA)
  • Machine Learning (Random Forest Classifier): Predictive modeling for churn analysis
  • GitHub: Version control and project hosting

🔄 Project Workflow

1️⃣ SQL Server (ETL & Data Cleaning)

  • Imported raw customer dataset into SSMS 21
  • Cleaned missing values, duplicates, and invalid entries
  • Created staging & production tables for analysis
  • Built views to separate churned vs. retained customers

2️⃣ Power BI (Transformations & Dashboards)

Transformations (Power Query):

  • prod_Churn → Added Churn Status flag, Monthly Charge ranges
  • mapping_AgeGrp → Categorized age into groups (<20, 20–35, 36–50, >50)
  • mapping_TenureGrp → Grouped tenure into <6M, 6–12M, 12–18M, 18–24M, >=24M
  • prod_Services → Unpivoted services, renamed fields for clarity

Key DAX Measures:

Total Customers = COUNT(prod_Churn[Customer_ID])
New Joiners = CALCULATE(
COUNT(prod_Churn[Customer_ID]),
prod_Churn[Customer_Status] = "Joined"
)
Total Churn = SUM(prod_Churn[Churn Status])
Churn Rate = [Total Churn] / [Total Customers]

About

End-to-end churn analysis project using SQL Server (ETL, Data Cleaning), Power BI (Dashboard), and Python (EDA & ML).

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, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all
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(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
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}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
GitHub - Ahadxcode/Churn-Analysis-Project: End-to-end churn analysis project using SQL Server (ETL, Data Cleaning), Power BI (Dashboard), and Python (EDA & ML). · GitHub
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Repository files navigation

📊 Churn Analysis Project

📌 Overview

This is an end-to-end churn analysis pipeline built using SQL Server Management Studio 21 (SSMS 21), Power BI, and Python.
The project helps businesses understand churn patterns, build predictive insights, and design proactive strategies to reduce customer churn.


🎯 Problem Statement

Customer churn — when customers stop using a service — leads to significant revenue loss. Businesses need to:

  • Identify customers at risk of leaving
  • Understand key churn drivers
  • Take proactive actions to retain them

This project provides a data-driven churn analysis solution by combining SQL, Power BI, and Python.


🛠️ Tech Stack

  • SQL Server Management Studio 21 (SSMS 21): ETL, data cleaning, preprocessing, and view creation
  • Power BI: Data transformation, modeling, and interactive dashboards
  • Python (Pandas, NumPy, Matplotlib, Scikit-learn): Exploratory Data Analysis (EDA)
  • Machine Learning (Random Forest Classifier): Predictive modeling for churn analysis
  • GitHub: Version control and project hosting

🔄 Project Workflow

1️⃣ SQL Server (ETL & Data Cleaning)

  • Imported raw customer dataset into SSMS 21
  • Cleaned missing values, duplicates, and invalid entries
  • Created staging & production tables for analysis
  • Built views to separate churned vs. retained customers

2️⃣ Power BI (Transformations & Dashboards)

Transformations (Power Query):

  • prod_Churn → Added Churn Status flag, Monthly Charge ranges
  • mapping_AgeGrp → Categorized age into groups (<20, 20–35, 36–50, >50)
  • mapping_TenureGrp → Grouped tenure into <6M, 6–12M, 12–18M, 18–24M, >=24M
  • prod_Services → Unpivoted services, renamed fields for clarity

Key DAX Measures:

Total Customers = COUNT(prod_Churn[Customer_ID])
New Joiners = CALCULATE(
COUNT(prod_Churn[Customer_ID]),
prod_Churn[Customer_Status] = "Joined"
)
Total Churn = SUM(prod_Churn[Churn Status])
Churn Rate = [Total Churn] / [Total Customers]

About

End-to-end churn analysis project using SQL Server (ETL, Data Cleaning), Power BI (Dashboard), and Python (EDA & ML).

Topics

Resources

Stars

0 stars

Watchers

0 watching

Forks

Releases

Packages

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { // Force GitHub README to respect dark mode (function() { var style = document.createElement('style'); style.textContent = ' .markdown-body { color-scheme: dark light; } .markdown-body pre { background: #161b22 !important; } .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; } .markdown-body table th, .markdown-body table td { border-color: #30363d !important; } .markdown-body img { background: #0d1117; } .markdown-body blockquote { border-left-color: #8b949e; } .markdown-body hr { border-color: #30363d; } '; document.head.appendChild(style); })(); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' GitHub - Ahadxcode/Churn-Analysis-Project: End-to-end churn analysis project using SQL Server (ETL, Data Cleaning), Power BI (Dashboard), and Python (EDA & ML). · GitHub
Skip to content

Repository files navigation

📊 Churn Analysis Project

📌 Overview

This is an end-to-end churn analysis pipeline built using SQL Server Management Studio 21 (SSMS 21), Power BI, and Python.
The project helps businesses understand churn patterns, build predictive insights, and design proactive strategies to reduce customer churn.


🎯 Problem Statement

Customer churn — when customers stop using a service — leads to significant revenue loss. Businesses need to:

  • Identify customers at risk of leaving
  • Understand key churn drivers
  • Take proactive actions to retain them

This project provides a data-driven churn analysis solution by combining SQL, Power BI, and Python.


🛠️ Tech Stack

  • SQL Server Management Studio 21 (SSMS 21): ETL, data cleaning, preprocessing, and view creation
  • Power BI: Data transformation, modeling, and interactive dashboards
  • Python (Pandas, NumPy, Matplotlib, Scikit-learn): Exploratory Data Analysis (EDA)
  • Machine Learning (Random Forest Classifier): Predictive modeling for churn analysis
  • GitHub: Version control and project hosting

🔄 Project Workflow

1️⃣ SQL Server (ETL & Data Cleaning)

  • Imported raw customer dataset into SSMS 21
  • Cleaned missing values, duplicates, and invalid entries
  • Created staging & production tables for analysis
  • Built views to separate churned vs. retained customers

2️⃣ Power BI (Transformations & Dashboards)

Transformations (Power Query):

  • prod_Churn → Added Churn Status flag, Monthly Charge ranges
  • mapping_AgeGrp → Categorized age into groups (<20, 20–35, 36–50, >50)
  • mapping_TenureGrp → Grouped tenure into <6M, 6–12M, 12–18M, 18–24M, >=24M
  • prod_Services → Unpivoted services, renamed fields for clarity

Key DAX Measures:

Total Customers = COUNT(prod_Churn[Customer_ID])
New Joiners = CALCULATE(
COUNT(prod_Churn[Customer_ID]),
prod_Churn[Customer_Status] = "Joined"
)
Total Churn = SUM(prod_Churn[Churn Status])
Churn Rate = [Total Churn] / [Total Customers]

About

End-to-end churn analysis project using SQL Server (ETL, Data Cleaning), Power BI (Dashboard), and Python (EDA & ML).

Topics

Resources

Stars

0 stars

Watchers

0 watching

Forks

Releases

Packages

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { // Highlight search terms from Google/DuckDuckGo/Bing referrer (function() { var ref = document.referrer; var terms = []; if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) { var url = new URL(ref); var q = url.searchParams.get('q') || url.searchParams.get('p'); if (q) { terms = q.split(/\s+/).filter(function(t) { return t.length > 2; }); } } if (terms.length === 0) return; var style = document.createElement('style'); style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }'; document.head.appendChild(style); function highlight(node) { if (node.nodeType === 3) { // text node var text = node.textContent; var found = false; terms.forEach(function(term) { var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi'); if (regex.test(text)) { found = true; var frag = document.createDocumentFragment(); var parts = text.split(regex); parts.forEach(function(part, i) { if (i % 2 === 0) { frag.appendChild(document.createTextNode(part)); } else { var span = document.createElement('span'); span.className = 'userscript-highlight'; span.textContent = part; frag.appendChild(span); } }); node.parentNode.replaceChild(frag, node); } }); } else if (node.nodeType === 1 && node.childNodes) { // element var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT']; if (!skipTags.includes(node.tagName)) { Array.from(node.childNodes).forEach(highlight); } } } highlight(document.body); // Re-highlight on dynamic content var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1 || node.nodeType === 3) highlight(node); }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' GitHub - Ahadxcode/Churn-Analysis-Project: End-to-end churn analysis project using SQL Server (ETL, Data Cleaning), Power BI (Dashboard), and Python (EDA & ML). · GitHub
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📊 Churn Analysis Project

📌 Overview

This is an end-to-end churn analysis pipeline built using SQL Server Management Studio 21 (SSMS 21), Power BI, and Python.
The project helps businesses understand churn patterns, build predictive insights, and design proactive strategies to reduce customer churn.


🎯 Problem Statement

Customer churn — when customers stop using a service — leads to significant revenue loss. Businesses need to:

  • Identify customers at risk of leaving
  • Understand key churn drivers
  • Take proactive actions to retain them

This project provides a data-driven churn analysis solution by combining SQL, Power BI, and Python.


🛠️ Tech Stack

  • SQL Server Management Studio 21 (SSMS 21): ETL, data cleaning, preprocessing, and view creation
  • Power BI: Data transformation, modeling, and interactive dashboards
  • Python (Pandas, NumPy, Matplotlib, Scikit-learn): Exploratory Data Analysis (EDA)
  • Machine Learning (Random Forest Classifier): Predictive modeling for churn analysis
  • GitHub: Version control and project hosting

🔄 Project Workflow

1️⃣ SQL Server (ETL & Data Cleaning)

  • Imported raw customer dataset into SSMS 21
  • Cleaned missing values, duplicates, and invalid entries
  • Created staging & production tables for analysis
  • Built views to separate churned vs. retained customers

2️⃣ Power BI (Transformations & Dashboards)

Transformations (Power Query):

  • prod_Churn → Added Churn Status flag, Monthly Charge ranges
  • mapping_AgeGrp → Categorized age into groups (<20, 20–35, 36–50, >50)
  • mapping_TenureGrp → Grouped tenure into <6M, 6–12M, 12–18M, 18–24M, >=24M
  • prod_Services → Unpivoted services, renamed fields for clarity

Key DAX Measures:

Total Customers = COUNT(prod_Churn[Customer_ID])
New Joiners = CALCULATE(
COUNT(prod_Churn[Customer_ID]),
prod_Churn[Customer_Status] = "Joined"
)
Total Churn = SUM(prod_Churn[Churn Status])
Churn Rate = [Total Churn] / [Total Customers]

About

End-to-end churn analysis project using SQL Server (ETL, Data Cleaning), Power BI (Dashboard), and Python (EDA & ML).

Topics

Resources

Stars

0 stars

Watchers

0 watching

Forks

Releases

Packages

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { // Strip utm_, fbclid, gclid, etc. from all links on page (function() { var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content', 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid', 'ref', 'ref_src', 'source', 'medium', 'campaign']; function cleanUrl(url) { try { var u = new URL(url, window.location.origin); var changed = false; trackingParams.forEach(function(p) { if (u.searchParams.has(p)) { u.searchParams.delete(p); changed = true; } }); return changed ? u.toString() : url; } catch (e) { return url; } } function cleanLinks() { document.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } cleanLinks(); var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1) { if (node.tagName === 'A') cleanLinks(); node.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + ' GitHub - Ahadxcode/Churn-Analysis-Project: End-to-end churn analysis project using SQL Server (ETL, Data Cleaning), Power BI (Dashboard), and Python (EDA & ML). · GitHub
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Repository files navigation

📊 Churn Analysis Project

📌 Overview

This is an end-to-end churn analysis pipeline built using SQL Server Management Studio 21 (SSMS 21), Power BI, and Python.
The project helps businesses understand churn patterns, build predictive insights, and design proactive strategies to reduce customer churn.


🎯 Problem Statement

Customer churn — when customers stop using a service — leads to significant revenue loss. Businesses need to:

  • Identify customers at risk of leaving
  • Understand key churn drivers
  • Take proactive actions to retain them

This project provides a data-driven churn analysis solution by combining SQL, Power BI, and Python.


🛠️ Tech Stack

  • SQL Server Management Studio 21 (SSMS 21): ETL, data cleaning, preprocessing, and view creation
  • Power BI: Data transformation, modeling, and interactive dashboards
  • Python (Pandas, NumPy, Matplotlib, Scikit-learn): Exploratory Data Analysis (EDA)
  • Machine Learning (Random Forest Classifier): Predictive modeling for churn analysis
  • GitHub: Version control and project hosting

🔄 Project Workflow

1️⃣ SQL Server (ETL & Data Cleaning)

  • Imported raw customer dataset into SSMS 21
  • Cleaned missing values, duplicates, and invalid entries
  • Created staging & production tables for analysis
  • Built views to separate churned vs. retained customers

2️⃣ Power BI (Transformations & Dashboards)

Transformations (Power Query):

  • prod_Churn → Added Churn Status flag, Monthly Charge ranges
  • mapping_AgeGrp → Categorized age into groups (<20, 20–35, 36–50, >50)
  • mapping_TenureGrp → Grouped tenure into <6M, 6–12M, 12–18M, 18–24M, >=24M
  • prod_Services → Unpivoted services, renamed fields for clarity

Key DAX Measures:

Total Customers = COUNT(prod_Churn[Customer_ID])
New Joiners = CALCULATE(
COUNT(prod_Churn[Customer_ID]),
prod_Churn[Customer_Status] = "Joined"
)
Total Churn = SUM(prod_Churn[Churn Status])
Churn Rate = [Total Churn] / [Total Customers]

About

End-to-end churn analysis project using SQL Server (ETL, Data Cleaning), Power BI (Dashboard), and Python (EDA & ML).

Topics

Resources

Stars

0 stars

Watchers

0 watching

Forks

Releases

Packages

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { // Auto-enable theater mode on YouTube (function() { function tryTheater() { var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]'); if (btn && !btn.classList.contains('activated')) { btn.click(); } } // Try immediately tryTheater(); // Try after navigation (SPA) var lastUrl = location.href; setInterval(function() { if (location.href !== lastUrl) { lastUrl = location.href; setTimeout(tryTheater, 500); } }, 1000); // Also try on player load var observer = new MutationObserver(tryTheater); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' GitHub - Ahadxcode/Churn-Analysis-Project: End-to-end churn analysis project using SQL Server (ETL, Data Cleaning), Power BI (Dashboard), and Python (EDA & ML). · GitHub
Skip to content

Repository files navigation

📊 Churn Analysis Project

📌 Overview

This is an end-to-end churn analysis pipeline built using SQL Server Management Studio 21 (SSMS 21), Power BI, and Python.
The project helps businesses understand churn patterns, build predictive insights, and design proactive strategies to reduce customer churn.


🎯 Problem Statement

Customer churn — when customers stop using a service — leads to significant revenue loss. Businesses need to:

  • Identify customers at risk of leaving
  • Understand key churn drivers
  • Take proactive actions to retain them

This project provides a data-driven churn analysis solution by combining SQL, Power BI, and Python.


🛠️ Tech Stack

  • SQL Server Management Studio 21 (SSMS 21): ETL, data cleaning, preprocessing, and view creation
  • Power BI: Data transformation, modeling, and interactive dashboards
  • Python (Pandas, NumPy, Matplotlib, Scikit-learn): Exploratory Data Analysis (EDA)
  • Machine Learning (Random Forest Classifier): Predictive modeling for churn analysis
  • GitHub: Version control and project hosting

🔄 Project Workflow

1️⃣ SQL Server (ETL & Data Cleaning)

  • Imported raw customer dataset into SSMS 21
  • Cleaned missing values, duplicates, and invalid entries
  • Created staging & production tables for analysis
  • Built views to separate churned vs. retained customers

2️⃣ Power BI (Transformations & Dashboards)

Transformations (Power Query):

  • prod_Churn → Added Churn Status flag, Monthly Charge ranges
  • mapping_AgeGrp → Categorized age into groups (<20, 20–35, 36–50, >50)
  • mapping_TenureGrp → Grouped tenure into <6M, 6–12M, 12–18M, 18–24M, >=24M
  • prod_Services → Unpivoted services, renamed fields for clarity

Key DAX Measures:

Total Customers = COUNT(prod_Churn[Customer_ID])
New Joiners = CALCULATE(
COUNT(prod_Churn[Customer_ID]),
prod_Churn[Customer_Status] = "Joined"
)
Total Churn = SUM(prod_Churn[Churn Status])
Churn Rate = [Total Churn] / [Total Customers]

About

End-to-end churn analysis project using SQL Server (ETL, Data Cleaning), Power BI (Dashboard), and Python (EDA & ML).

Topics

Resources

Stars

0 stars

Watchers

0 watching

Forks

Releases

Packages

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { // Remove or un-stick sticky/fixed headers that block content (function() { function unstick() { document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) { if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') { el.style.position = 'static'; el.style.top = 'auto'; el.style.zIndex = 'auto'; } }); } unstick(); var observer = new MutationObserver(unstick); observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] }); })(); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' GitHub - Ahadxcode/Churn-Analysis-Project: End-to-end churn analysis project using SQL Server (ETL, Data Cleaning), Power BI (Dashboard), and Python (EDA & ML). · GitHub
Skip to content

Repository files navigation

📊 Churn Analysis Project

📌 Overview

This is an end-to-end churn analysis pipeline built using SQL Server Management Studio 21 (SSMS 21), Power BI, and Python.
The project helps businesses understand churn patterns, build predictive insights, and design proactive strategies to reduce customer churn.


🎯 Problem Statement

Customer churn — when customers stop using a service — leads to significant revenue loss. Businesses need to:

  • Identify customers at risk of leaving
  • Understand key churn drivers
  • Take proactive actions to retain them

This project provides a data-driven churn analysis solution by combining SQL, Power BI, and Python.


🛠️ Tech Stack

  • SQL Server Management Studio 21 (SSMS 21): ETL, data cleaning, preprocessing, and view creation
  • Power BI: Data transformation, modeling, and interactive dashboards
  • Python (Pandas, NumPy, Matplotlib, Scikit-learn): Exploratory Data Analysis (EDA)
  • Machine Learning (Random Forest Classifier): Predictive modeling for churn analysis
  • GitHub: Version control and project hosting

🔄 Project Workflow

1️⃣ SQL Server (ETL & Data Cleaning)

  • Imported raw customer dataset into SSMS 21
  • Cleaned missing values, duplicates, and invalid entries
  • Created staging & production tables for analysis
  • Built views to separate churned vs. retained customers

2️⃣ Power BI (Transformations & Dashboards)

Transformations (Power Query):

  • prod_Churn → Added Churn Status flag, Monthly Charge ranges
  • mapping_AgeGrp → Categorized age into groups (<20, 20–35, 36–50, >50)
  • mapping_TenureGrp → Grouped tenure into <6M, 6–12M, 12–18M, 18–24M, >=24M
  • prod_Services → Unpivoted services, renamed fields for clarity

Key DAX Measures:

Total Customers = COUNT(prod_Churn[Customer_ID])
New Joiners = CALCULATE(
COUNT(prod_Churn[Customer_ID]),
prod_Churn[Customer_Status] = "Joined"
)
Total Churn = SUM(prod_Churn[Churn Status])
Churn Rate = [Total Churn] / [Total Customers]

About

End-to-end churn analysis project using SQL Server (ETL, Data Cleaning), Power BI (Dashboard), and Python (EDA & ML).

Topics

Resources

Stars

0 stars

Watchers

0 watching

Forks

Releases

Packages

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { // Universal Dark Mode - works on any site (function() { var enabled = true; function applyDarkMode() { if (!enabled) return; // Create style element if it doesn't exist var style = document.getElementById('universal-dark-mode-style'); if (!style) { style = document.createElement('style'); style.id = 'universal-dark-mode-style'; document.head.appendChild(style); } // Dark mode CSS - inverts colors but preserves images/video style.textContent = ' /* Invert everything except media */ html { filter: invert(1) hue-rotate(180deg) !important; background: #1a1a2e !important; } /* Restore images, videos, iframes, canvas */ img, video, iframe, canvas, svg, picture, [style*="background-image"] { filter: invert(1) hue-rotate(180deg) !important; } /* Preserve specific elements that should not be inverted */ .no-dark-mode, .no-dark-mode *, [data-theme="light"], [data-theme="light"], .ace_editor, .ace_editor *, .CodeMirror, .CodeMirror *, .monaco-editor, .monaco-editor *, .markdown-body pre, .markdown-body pre *, .highlight, .highlight *, pre code, pre code * { filter: none !important; } /* Fix common UI elements */ .modal, .popup, .dropdown-menu, .tooltip, .popover { filter: invert(1) hue-rotate(180deg) !important; background: #2d2d44 !important; border-color: #444 !important; } /* Scrollbars */ ::-webkit-scrollbar { background: #1a1a2e !important; } ::-webkit-scrollbar-thumb { background: #444 !important; } ::-webkit-scrollbar-thumb:hover { background: #555 !important; } /* Selection */ ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; } ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; } '; } function removeDarkMode() { var style = document.getElementById('universal-dark-mode-style'); if (style) style.remove(); } // Toggle with Alt+Shift+D document.addEventListener('keydown', function(e) { if (e.altKey && e.shiftKey && e.key === 'D') { e.preventDefault(); enabled = !enabled; if (enabled) { applyDarkMode(); console.log('[Universal Dark Mode] Enabled'); } else { removeDarkMode(); console.log('[Universal Dark Mode] Disabled'); } } }); // Apply on load applyDarkMode(); // Re-apply on dynamic content var observer = new MutationObserver(function(mutations) { if (enabled && !document.getElementById('universal-dark-mode-style')) { applyDarkMode(); } }); observer.observe(document.head, { childList: true }); console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle'); })(); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })(); GitHub - Ahadxcode/Churn-Analysis-Project: End-to-end churn analysis project using SQL Server (ETL, Data Cleaning), Power BI (Dashboard), and Python (EDA & ML). · GitHub
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📊 Churn Analysis Project

📌 Overview

This is an end-to-end churn analysis pipeline built using SQL Server Management Studio 21 (SSMS 21), Power BI, and Python.
The project helps businesses understand churn patterns, build predictive insights, and design proactive strategies to reduce customer churn.


🎯 Problem Statement

Customer churn — when customers stop using a service — leads to significant revenue loss. Businesses need to:

  • Identify customers at risk of leaving
  • Understand key churn drivers
  • Take proactive actions to retain them

This project provides a data-driven churn analysis solution by combining SQL, Power BI, and Python.


🛠️ Tech Stack

  • SQL Server Management Studio 21 (SSMS 21): ETL, data cleaning, preprocessing, and view creation
  • Power BI: Data transformation, modeling, and interactive dashboards
  • Python (Pandas, NumPy, Matplotlib, Scikit-learn): Exploratory Data Analysis (EDA)
  • Machine Learning (Random Forest Classifier): Predictive modeling for churn analysis
  • GitHub: Version control and project hosting

🔄 Project Workflow

1️⃣ SQL Server (ETL & Data Cleaning)

  • Imported raw customer dataset into SSMS 21
  • Cleaned missing values, duplicates, and invalid entries
  • Created staging & production tables for analysis
  • Built views to separate churned vs. retained customers

2️⃣ Power BI (Transformations & Dashboards)

Transformations (Power Query):

  • prod_Churn → Added Churn Status flag, Monthly Charge ranges
  • mapping_AgeGrp → Categorized age into groups (<20, 20–35, 36–50, >50)
  • mapping_TenureGrp → Grouped tenure into <6M, 6–12M, 12–18M, 18–24M, >=24M
  • prod_Services → Unpivoted services, renamed fields for clarity

Key DAX Measures:

Total Customers = COUNT(prod_Churn[Customer_ID])
New Joiners = CALCULATE(
COUNT(prod_Churn[Customer_ID]),
prod_Churn[Customer_Status] = "Joined"
)
Total Churn = SUM(prod_Churn[Churn Status])
Churn Rate = [Total Churn] / [Total Customers]

About

End-to-end churn analysis project using SQL Server (ETL, Data Cleaning), Power BI (Dashboard), and Python (EDA & ML).

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