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Key Influencers & Decomposition Tree

You use AI visuals to automatically discover drivers and patterns in your data.

Why this lesson matters

Your data shows you what is happening. Revenue is falling, customer satisfaction is rising, margins are shifting. But the question your stakeholders ask is always: why?

The Key influencers visual and the Decomposition tree are two AI-powered visuals in Power BI that answer exactly that question. They automatically analyse which factors influence an outcome and let you navigate through your data interactively to find causes.

Key influencers: what drives your outcome?

The Key influencers visual analyses which factors have the most influence on a specific metric or outcome.

The parts of the Key influencers visual: tabs, target value, and the panes that show the most important factors. Source: Microsoft Learn
The parts of the Key influencers visual: tabs, target value, and the panes that show the most important factors. Source: Microsoft Learn

How to read the visual:

  • Tabs At the top you switch between Key influencers (individual factors) and Top segments (combinations of factors).
  • Target value You choose which outcome you're investigating, for example a low rating.
  • Left pane The factors with the most influence, in order of importance.
  • Right pane Click a factor on the left and you see on the right how much it counts, with an average line as a reference.

How it works

  1. 1You select a target variable (what you want to explain)
  2. 2You select explanatory factors (what might have an influence)
  3. 3Power BI automatically runs a statistical analysis
  4. 4The result shows which factors have the strongest influence, ranked by impact

Example: customer satisfaction

text
Target variable: Customer satisfaction score (high/low)
Explanatory factors: Delivery time, Product category, 
  Region, Customer segment, Contact moments

Result:
- Delivery time > 5 days → 3.2x more likely to get a low score
- Product category = Electronics → 2.1x more likely to get a low score  
- Customer segment = Enterprise → 1.8x more likely to get a high score
Going deeper

The Key influencers visual uses machine learning (specifically: logistic regression and decision trees) under the hood. You don't need any statistics knowledge to use it. Still, it's good to know that this is real analysis rather than guesswork.

Configuring Key influencers

Step by step

  1. 1Select the Key influencers visual in the Visualizations pane
  2. 2Drag your target variable to the Analyze field
  3. 3Drag explanatory factors to the Explain by field
  4. 4In the visual, choose whether you want to analyse what makes a value increase or decrease

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