26.

Non- Short Long

Migrating Distance Distance

Migrants Migrants

18 6 4 N = 18

13 11 9 G = 180

19 7 5 SX2 = 2150

12 9 6
16 8 5
12 13 7

M = 15 M = 9 M = 6

T = 90 T = 54 T = 36

SS = 48 SS = 34 SS = 16

a. Use an ANOVA with a = .05 to determine whether there are any significant mean differences among the three groups of birds.

b. Compute hsquared, the percentage of variance explained by the group differences, for these data.

c. Use the Tukey HSD posttest to determine which groups are significantly different.