The lower and upper ideal fourths of Wilcox (2017) eq. (2.6)-(2.7), and the interquartile range they define, eq. (2.8). These are the quartile estimates the book uses for outlier detection.
Examples
V <- c(1, 2, 3, 4, 5, 6, 7, 8)
morie_ideal_fourths(V)
#> $q1
#> [1] 2.416667
#>
#> $q2
#> [1] 6.583333
#>
#> $j
#> [1] 2
#>
#> $h
#> [1] 0.4166667
#>
#> $k
#> [1] 7
#>
