`R/BSDA-package.R`

`Books.Rd`

Data for Exercise 9.53

`Books`

A data frame/tibble with 17 observations on two variables

- book
number of books read

- spelling
spelling score

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

```
plot(spelling ~ book, data = Books)
mod <- lm(spelling ~ book, data = Books)
summary(mod)
#>
#> Call:
#> lm(formula = spelling ~ book, data = Books)
#>
#> Residuals:
#> Min 1Q Median 3Q Max
#> -23.519 -4.684 3.083 7.122 11.520
#>
#> Coefficients:
#> Estimate Std. Error t value Pr(>|t|)
#> (Intercept) 59.5186 3.8758 15.356 1.39e-10 ***
#> book 1.2330 0.2081 5.926 2.78e-05 ***
#> ---
#> Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
#>
#> Residual standard error: 9.542 on 15 degrees of freedom
#> Multiple R-squared: 0.7007, Adjusted R-squared: 0.6807
#> F-statistic: 35.11 on 1 and 15 DF, p-value: 2.784e-05
#>
abline(mod, col = "blue", lwd = 2)
```