### Linear Statistical Models

### Sample Quiz #1

###
Consider the design

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
h

2. 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, when each cell has 10
observations

Stata commands:
or
/ ( )
F = ______________________________________
( ) / ( )

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Linear Statistical Models Course

Phil Ender, 12Feb98