Psychology 315 - Experimental Psychology I
Bob McFatter
Answers to Potpourri problems

1.   Experiment 1: dfW = 12; MSB = 20; MSW = 1.83; F(2,12) = 10.91, p<.01, LSD = 1.87
     Experiment 2: dfW = 12; MSB = 20; MSW = 17.5; F(2,12) = 1.14
     
2.   Experiment 1: dfW = 15; MSB = 86.405; MSW = 53.179; F(2,15) = 1.63, ns
     Experiment 2: dfW = 15; MSB = 259.42; MSW = 30.111; F(2,15) = 8.62, p<.01


3.   Source    SS      df     MS        F
     Between   81.25    4   20.313    3.07
     Within   297.35   45    6.608

4.   Answer is given in the problem.

5.   MSB = 18(1.9853) = 35.73
     MSW = 21.962/4 = 5.4906
     F(3, 68) = 6.51, p<.001, LSD = 1.56

6.   Source    SS    df      MS      F
     Pay       28.8   1   28.800    22.59          Cell LSD = 1.51
     Job Sec   20.0   1   20.000    15.69
     PxJ       12.8   1   12.800    10.04
     Error     20.4  16    1.275     

7.   Caffeine: F(1,24) = 1.20
     Sex:      F(1,24) = 0.80
     CxS:      F(1,24) = 6.92     Cell LSD = 1.56