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Conditional probability

As explained in Statistics Slam Dunk

Conditional probability is the probability of an event given that a specified condition or other event holds.

Conditional probability measures how likely an outcome is after restricting attention to a specified condition. In NBA draft analysis, it answers questions such as: how likely is a future superstar given a pick in the top five? section 3.8

The calculation follows a practical workflow:

  • For picks one through five, the probability of selecting a future superstar is 0.24, or 12 of 50 players. section 3.8

NBA draft value

Top-five picks have a 24% conditional probability of producing a player with more than 100 career win shares, while later first-round picks have about a 1% probability. Weighting each outcome's median win shares produces expected values of 57.53 and 21.21. section 3.8

How Statistics Slam Dunk covers it

How deep it goes
Defines the measure through counts, computes segment probabilities, and combines them with medians for expected value.
Examples
Uses NBA draft picks, win-share bands, probability tables, and R filtering.
What you can do after
Apply it via R to estimate outcome probabilities within draft segments and calculate expected value.
How it connects
Connects conditional probability to segmentation analysis, median, and expected value.

Also explained in

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Related concepts

This explainer was generated by Manning's knowledge graph from the text of Statistics Slam Dunk. The section links point to the parts of the book it draws on.