Example data used to investigate missing data (this is the complete dataset).
data(engage)
A data frame with 528 observations from 40 groups and 7 variables:
Student engagement.
Student motivation.
Student grade point average.
Student grade level (6-8; a factor).
School level rural variable indicator; 1 = yes/0 = no.
Percent of students eligible for free or reduced price meals at the school.
School indicator (clustering variable).