`R/BSDA-package.R`

`Nfldraft.Rd`

Data for Exercises 9.10 and 9.16

`Nfldraft`

A data frame/tibble with 29 observations on three variables

- rating
rating of each player on a scale out of 10

- forty
forty yard dash time (in seconds)

- weight
weight of each player (in pounds)

*USA Today*, April 20, 1994.

Kitchens, L. J. (2003) *Basic Statistics and Data Analysis*.
Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.

```
plot(rating ~ forty, data = Nfldraft)
cor(Nfldraft$rating, Nfldraft$forty)
#> [1] -0.2684964
summary(lm(rating ~ forty, data = Nfldraft))
#>
#> Call:
#> lm(formula = rating ~ forty, data = Nfldraft)
#>
#> Residuals:
#> Min 1Q Median 3Q Max
#> -0.97407 -0.50864 -0.00184 0.35001 1.40602
#>
#> Coefficients:
#> Estimate Std. Error t value Pr(>|t|)
#> (Intercept) 13.744 5.291 2.598 0.015 *
#> forty -1.466 1.012 -1.448 0.159
#> ---
#> Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
#>
#> Residual standard error: 0.6449 on 27 degrees of freedom
#> Multiple R-squared: 0.07209, Adjusted R-squared: 0.03772
#> F-statistic: 2.098 on 1 and 27 DF, p-value: 0.159
#>
```