Two-stage unequal-probability sample without replacement from the population of classes in classes data.
data(classpps)
This data frame contains the following columns:
class ID number
number of students in class
sampling weight for student
number of hours spent studying statistics
Lohr (2021), Sampling: Design and Analysis, 3rd Edition. Boca Raton, FL: CRC Press.
Lu and Lohr (2021), R Companion for Sampling: Design and Analysis, 3rd Edition, 1st Edition. Boca Raton, FL: CRC Press.