b1 | b2 | |||
a1 | s1 | a | e | |
s2 | b | f | ||
a2 | s3 | c | g | |
s4 | d | h |
1. Use orthogonal coding to code this design. Indicate which columns are for which effects. Hint: More columns are provided than are needed.
x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 a b c d e f g h2. Give the Stata commands beginning with regress that will test the A main effect or use R^{2}'s to compute the F-ratio for A main effect.
Stata commands: or / ( ) F = ______________________________________ ( ) / ( )*****