2. The ANOVA
âą The analysis of variance compares the means
of three or more random samples and
determines whether there is a significant
difference between the populations from
which the samples are taken.
9. Fill in the Summary Table
Source of
Variation
df SS MS F
Between 2 103.6 51.8 37.00
Within 12 16.8 1.4
Total 14 120. 4
dfb = no. of groups (k) â 1
dfw = total no. of observations â no. of groups (N-K)
MS = SS/df
F = MSb/MSw