Length of left middle finger and height for an unequal-probability sample of criminals of size 200 from the anthrop dataset. The probability of selection, psi[i], was proportional to 24 for y < 65, 12 for y = 65, 2 for y = 66 or 67, and 1 for y > 67.
anthuneq
Data frame with the following 3 variables:
length of left middle finger (cm)
height (inches)
probability of selection
Lohr (1999). Sampling: Design and Analysis, Duxbury, p. TODO and 438.