Explaining Measures
In case you may not know much about basketball OR you do and you'd like more context for the measures I created.
Measures & Definitions
*NOTE: Measures with an asterisk are the ones I created.
Win/Loss Percentage
​The percentage of games that have resulted in a win for a given team during the regular season. This is calculated by taking the number of wins and dividing it by the number of games played.
Net Rating
Measures a team's point differential per 100 possessions.
Four Factors (Offensive & Defensive)
Dean Oliver’s Four Factors are an approximate measure of what it takes for basketball team’s to win games. These are the core values in calculating Performance Score.
*Offensive Performance Score (OP)
A measure of a team’s offensive performance using the offense-focused Four Factors.
OP = (eFG% * 40%) + ((1-TOV%) * 25%) + (ORB% * 20%) + ((FT/FGA) * 15%)
*Defensive Performance Score (DP)
A measure of a team’s defensive performance using the defense-focused Four Factors.
DP = ((1 - eFG%) * 40%) + ((TOV%) * 25%) + (DRB% * 20%) + ((1 - (FT/FGA)) * 15%)
*Performance Score (PS)
A measure of a team’s overall on-court performance by combining the Offensive and Defensive Performance Scores.
PS = OP + DP
*Team Score
A measure of a team’s overall production for a given season.
TS = ( Net Rating + ( Win % * 10 ) + PS ) * 10
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Generally speaking:
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A Team Score between 320 - 350 is DECENT.
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A Team Score between 350 - 420 is GOOD.
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A Team Score above 420 is EXCEPTIONAL.
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*Competitive Score (CS)
A measure of how competitive a given team is based on that team’s playoff performance. Competitive score is based on the number of wins a team gains, opponent strength, and number of games played.
CS = [ (# of wins * opponent TS)
+ (# of wins * opponent TS) +... ] / # of games played
The main focus behind this metric is to determine and compare the degree of competitiveness across teams.