day 23 last blank

[erin hill]

Hi.

I am missing the last blank for day 23 page 2 when it says "as we have one more marginal point per game, the winning percentage increases by___%". I can't find this information on the power points-what was supposed to go here?

please let me know and thanks!

[Taeho Kim]

erin hill wrote

Hi.

I am missing the last blank for day 23 page 2 when it says "as we have one more marginal point per game, the winning percentage increases by___%". I can't find this information on the power points-what was supposed to go here?

please let me know and thanks!

Sure erin,

This is the interpretation of the slope, beta1.

Call:
lm(formula = Win_P ~ MPG)
Coefficients:
Estimate Std. Error t value Pr(>|t|)
(Intercept) 48.94772 0.71950 68.03 <2e-16 ***
    MPG     1.82658 0.06471 28.23 <2e-16 ***
---
Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
Residual standard error: 8.108 on 128 degrees of freedom
Multiple R-squared: 0.8616, Adjusted R-squared: 0.8605
F-statistic: 796.9 on 1 and 128 DF, p-value: < 2.2e-16

Since the value of the slope is 1.82658 (%) from the above RStudio output,
we can plug 1.83 into the blank.