Chapters

Recommended Learning Resources

Posted by: Jaspreet

Last Updated on: 19 Nov, 2024


ML Case Study Resources


Chapters




RCA Fundamentals

To analyze a recent dip in sales or an escalation in customer complaints, you can use a structured framework to identify root causes and take corrective actions. Here's a recommended approach:


1. Framework: RCA (Root Cause Analysis)

Step 1: Define the Problem

  • Clearly articulate the issue:
    • For Sales: "Sales have dropped by X% over the past Y weeks."
    • For Complaints: "Customer complaints have increased by Z% in the last quarter."
  • Identify metrics that reflect the problem:
    • Sales: Revenue, units sold, customer churn rate.
    • Complaints: Complaint volume, sentiment scores, product categories involved.

Step 2: Break Down the Problem

Use the 5 Whys Technique to drill down into why the issue occurred:

  1. Why did sales drop/customer complaints rise?
  2. Why did that factor happen?
    (Repeat until you reach a root cause.)

Step 3: Analyze Contributing Factors

Segment the data using MECE (Mutually Exclusive, Collectively Exhaustive) categories to ensure comprehensive coverage.

For Sales:

  • Market Factors: Seasonality, economic conditions, competitor activity.
  • Product Factors: Price changes, inventory issues, quality concerns.
  • Customer Behavior: Changes in purchasing patterns, demographics, churn.
  • Marketing: Ad spend, campaign performance, brand perception.

For Complaints:

  • Channels: Analyze which channels (social media, email, call center) have higher complaint volumes.
  • Categories: Break down complaints by product, service type, or issue type (e.g., delivery, quality).
  • Sentiment: Perform text analysis on complaint data to identify recurring themes.
  • Process Issues: Delays in resolution, poor communication.

Step 4: Conduct Exploratory Analysis

  1. Trend Analysis:
    • Plot sales/complaints over time to identify patterns (e.g., seasonal dips, recent spikes).
  2. Segmentation:
    • Group data by categories like region, product line, customer type, or complaint channel.
  3. Correlation Analysis:
    • Examine relationships between key factors (e.g., promotions vs. sales, delivery time vs. complaints).

2. Use a Diagnostic Framework

A. Sales Dip:

  • 4Ps Framework (Product, Price, Place, Promotion):
    • Product: Were there changes in product quality or availability?
    • Price: Were there pricing changes, discounts, or competitive pressures?
    • Place: Did distribution channels face issues (e.g., stockouts)?
    • Promotion: Did ad campaigns underperform, or did customers respond poorly to messaging?

B. Complaint Escalation:

  • Customer Journey Analysis:
    • Map the end-to-end customer experience.
    • Identify bottlenecks (e.g., slow response times, delivery delays).

3. Visualize Insights

  • Heatmaps: Show complaint concentration by region, product, or channel.
  • Time Series Plots: Visualize trends in sales or complaints over time.
  • Pareto Charts: Focus on the 20% of factors contributing to 80% of complaints.
  • Sankey Diagrams: Visualize customer journeys and drop-offs.

4. Tools and Techniques

  • SQL: Query sales or complaint data for segmentation and aggregation.
  • Python/R: Use libraries like pandas, matplotlib, or seaborn for data analysis and visualization.
  • Machine Learning:
    • Regression Analysis: Understand factors impacting sales or complaints.
    • Clustering: Identify groups of customers or products with common issues.

5. Present Recommendations

  • Summarize findings using a Problem-Cause-Solution (PCS) structure:
    1. Problem: Clearly state the issue.
    2. Cause: Highlight root causes with evidence.
    3. Solution: Provide actionable recommendations.

Example:

  • Sales: "A 15% dip in sales was driven by reduced inventory levels in the top-performing product category. Increase stock to meet demand."
  • Complaints: "A 30% rise in delivery complaints correlates with a shift to a new courier service. Reassess performance and customer communication."

This structured approach ensures that you investigate systematically, identify root causes, and implement data-driven solutions.

Other Frameworks