`R/BSDA-package.R`

`Vocab.Rd`

Data for Exercise 7.80

`Vocab`

A data frame/tibble with 14 observations on two variables

- first
reading test score before formal vocabulary training

- second
reading test score after formal vocabulary training

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

```
t.test(Vocab$first, Vocab$second, paired = TRUE)
#>
#> Paired t-test
#>
#> data: Vocab$first and Vocab$second
#> t = -2.2958, df = 13, p-value = 0.03896
#> alternative hypothesis: true difference in means is not equal to 0
#> 95 percent confidence interval:
#> -7.4866946 -0.2275911
#> sample estimates:
#> mean of the differences
#> -3.857143
#>
```