Variance ratio test between groups.

Larger variance/smaller variance.

Difference between the means of 2+ groups.

Compares variance between groups to variance within groups.

IV- categorical

DV- continuous

Variance within a group.

Can't be controlled- individual differences.

True score- corresponding original score.

Degrees of freedom: N-K

Variance due to IV manipulation.

IV mean (column mean) most accurate estimate.

Degrees of freedom: K-1

No difference between variance between and within groups. 

Differences are due to error variance (V. within groups), not due to manipulation of IV.

sum of sq./(K-1)= true variance

divided by

sum of sq./(N-K)= error variance