Discussion:
Q: The following is hypothetical data similar to the actual research results about birds. The numbers represent relative brain size for the individual birds in each sample.
Non-migrating short distance migrants long distance migrants
18 6 4 N=18
13 11 9 G=180
19 7 5 EX2=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
Use an anova with o=.05 to determine whether there are any significant mean differences among the three groups of birds. (use two decimal places)
SOURCE SS df MS F F-critical
BETWEEN ______ _____ _____ _____ _______
WITHIN ______ _____ _____
TOTAL ______ ______
F distribution
numerator degrees of freedom=6
denominator degrees of freedom=16
conclusion
fail to reject the null hypothesis; there are significant differences among the three groups of birds
reject the null hypothesis; there are significant differences among the three groups of birds
reject the null hypothesis; there are no significant differences among the three groups of birds
fail to reject the null hypothesis; there are no significant differences among the three groups of birds.
the results show significant differences in the 3 groups of birds______________.
use the Tukey HSD posttest to determine which groups are significantly different (use 2 decimal places)
non-migrating vs. short distance migrants:
not enough information
no significant mean difference
significant mean difference
non-migrating vs. long distance migrants
no significant mean difference
not enough information
significant mean difference
short distance migrants vs. long distance migrants
no significant mean difference
not enough information
significant mean difference.