Chapter 12 - ANOVA

Question 1

sample z and t

Answer 1

• compare 1 sample to 1 population

Question 2

Independent/related t test

Answer 2

• compare 2 samples

Question 3

ANOVA

Answer 3

• compare 3+ samples

Question 4

One way Anova

Answer 4

• analysis of variance
• one independent
• 3+ categorical variables

Question 5

variance

Answer 5

• average squared deviation from the mean

Question 6

Source of variance

Answer 6

• between group
• within group
• decide whether they are significant or not

Question 7

F statistic

Answer 7

• between group/within group

Question 8

Error variance

Answer 8

• individual differences due to other reasons

Question 9

F interpretation

Answer 9

• F = 1, fail to reject
• F > 1, reject

Question 10

Hypothesis

Answer 10

• Ho = U1 = U2 = U3
• H1 = one group is different

Question 11

df (numerator)

Answer 11

= k-1

Question 12

df (denominator)

Answer 12

= N-K

Question 13

Mean square

Answer 13

• SS/df

Question 14

Fobt

Answer 14

• MS between/MS within

Question 15

Sum of squares

Answer 15

• sum of squared deviations from the mean

Question 16

sum of squares between

Answer 16

• sum of squared deviations of the group means from the grand means

Question 17

sum of squares within

Answer 17

• sum of squared deviations within each group

Question 18

effect size for ANOVA

Answer 18

• measuring the proportion of variance accounted for by the factor

Question 19

Eta squared (n2)

Answer 19

• quick but biased estimate

Question 20

Omega squared (w2)

Answer 20

• rigorous & less biased measure