Data for Exercise 9.63

Nfldraf2

## Format

A data frame/tibble with 47 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)

## References

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

## Examples


plot(rating ~ forty, data = Nfldraf2)

summary(lm(rating ~ forty, data = Nfldraf2))
#>
#> Call:
#> lm(formula = rating ~ forty, data = Nfldraf2)
#>
#> Residuals:
#>     Min      1Q  Median      3Q     Max
#> -1.0476 -0.5691 -0.2625  0.5055  2.0457
#>
#> Coefficients:
#>             Estimate Std. Error t value Pr(>|t|)
#> (Intercept)   9.5141     4.1838   2.274   0.0278 *
#> forty        -0.7118     0.8472  -0.840   0.4052
#> ---
#> Signif. codes:  0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
#>
#> Residual standard error: 0.766 on 45 degrees of freedom
#> Multiple R-squared:  0.01545,	Adjusted R-squared:  -0.006432
#> F-statistic: 0.706 on 1 and 45 DF,  p-value: 0.4052
#>