R/BSDA-package.R
Vocab.Rd
Data for Exercise 7.80
Vocab
A data frame/tibble with 14 observations on two variables
reading test score before formal vocabulary training
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
#>