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HR / People Analytics · how-to

Diversity Index → EBIT regression — in SQL

A composite-index-driver analysis. Every step below is the same analysis rendered for SQL — grounded in the source, honest where SQL can't do a step cleanly.

Same analysis, your tool

SCORE-INDEX

convert raw group counts into a single trackable diversity metric

items / n AS EthnicityDiversityIndex

SCORE-INDEX · mechanical

same index treatment for gender composition

items / n AS GenderDiversityIndex

REGRESS

estimate how each diversity index moves EBIT

SQL can’t do this cleanly

REGRESS has no clean sql form —

VALIDITY · mechanical

keep only a statistically reliable model

corr(measure, criterion)

PREDICT

translate diversity indices into a bottom-line forecast

SQL can’t do this cleanly

PREDICT has no clean sql form —

Honest note: SQL can’t do 2 of these steps cleanly — the switcher shows which tools can.

Grounded in

Predictive HR Analytics with Excel — §18.1/18.2 Simpson's Diversity Index & EBIT regression

Doing HR / People Analytics work?

The full HR / People Analytics guide covers this and the whole workflow around it — reconciled from the field’s best books.

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