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In the 2017 MLB season, the ideal exponent to use when predicting winning percentage was 1.6. The ideal exponent is different for other sports, however.

In the 2017 MLB season, the ideal exponent to use when predicting winning percentage was 1.6. The ideal exponent is different for other sports, however. For the WNBA, we can estimate a team's winning percentage with following formula:

Predicted winning percentage =PS?PS?+PA?

where PS = points scored, PA = points allowed, and ? = the exponent. The scatterplot shows the sum of squared residuals for various exponents using data from the 2017 season.

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