Data for Exercise 1.68 and 1.82
Concept
A data frame/tibble with 28 observations on one variable
Tennessee self concept scores
Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.
summary(Concept$self)
#> Min. 1st Qu. Median Mean 3rd Qu. Max.
#> 3.00 20.00 25.00 24.64 29.25 45.00
sd(Concept$self)
#> [1] 9.707631
diff(range(Concept$self))
#> [1] 42
IQR(Concept$self)
#> [1] 9.25
summary(Concept$self/10)
#> Min. 1st Qu. Median Mean 3rd Qu. Max.
#> 0.300 2.000 2.500 2.464 2.925 4.500
IQR(Concept$self/10)
#> [1] 0.925
sd(Concept$self/10)
#> [1] 0.9707631
diff(range(Concept$self/10))
#> [1] 4.2