You can use Calc > Make Patterned Data > Simple Set of Numbers to enter the level numbers of a factor. Here is an easy way to enter the level numbers for a three-way crossed design with a, b, and c levels of factors A, B, C, with n observations per cell:
Enter the levels for factor A.
Choose Calc > Make Patterned Data > Simple Set of Numbers, and press the F3 key to reset defaults.
Enter A in Store patterned data
in.
Enter 1 in From first
value. Enter the number of levels in A in To last
value.
Enter the product of bcn in Number of times to
list the sequence.
Click OK.
Enter the levels for factor B.
Choose Calc > Make Patterned Data > Simple Set of Numbers, and press the F3 key to reset defaults.
Enter B in Store patterned data
in.
Enter 1 in From first
value. Enter the number of levels in B in To last
value.
Enter the number of levels in A in Number of times to
list each value. Enter the product of cn in Number of times to
list the sequence.
Click OK.
Enter the levels for factor C.
Choose Calc > Make Patterned Data > Simple Set of Numbers, and press the F3 key to reset defaults.
Enter C in Store patterned data
in.
Enter 1 in From first
value. Enter the number of levels in C in To last
value.
Enter the product of ab in Number of times to
list each value. Enter the sample size n in Number of times to
list the sequence.