BSDA (version 1.2.1)

Spelling: Spelling scores for 9 eighth graders before and after a 2-week course of instruction

Description

Data for Exercise 7.56

Usage

Spelling

Format

A data frame/tibble with nine observations on three variables

before

spelling score before a 2-week course of instruction

after

spelling score after a 2-week course of instruction

differ

after - before (spelling score)

References

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

Examples

qqnorm(Spelling$differ)
qqline(Spelling$differ)
shapiro.test(Spelling$differ)
t.test(Spelling$before, Spelling$after, paired = TRUE)
t.test(Spelling$differ)