Exemplary test design which may be typical in the context of large-scale assessment.

This data set contains 39 test forms (booklets), each with 4 blocks of either reading, listening or orthography tasks. Reading blocks start with "D-L", listening blocks start with "D-H", and orthography blocks start with "D-R".

data(des2)

Format

'data.frame': 39 obs. of 5 variables

TH

booklet identifier

X1

first block

X2

second block

X3

third block

X4

fourth block

Source

artificial data