ANOVA

Question 1

What is ANOVA?

Answer 1

Statistical test to compare means of more than two groups

Question 2

Multiple pairwise comparison is…

Answer 2

Repeating multiple t-tests (this gives the same results as an ANOVA)

Question 3

How many IV levels are there in an ANOVA?

Answer 3

More than 3

Question 4

Notation for number of levels in the ANOVA

Answer 4

k

Question 5

A pairwise comparison is…

Answer 5

One possible t-test out of the many that could be done

Question 6

A pairwise comparison is done to…

Answer 6

Determine which treatment affects the dependent variable and which ones do not

Question 7

Reason for pairwise comparison

Answer 7

ANOVA only tells you that a difference exists. The pairwise comparison fills in the gaps

Question 8

Formula for how many pairwise comparisons there will be

Answer 8

k(k-1)/2

Question 9

Each pairwise comparison needs a pooled Standard deviation in the denominator, we call this the…

Answer 9

Mean Squared Error

Question 10

What do we use for the Spooled or “Mean Squared Error” for ANOVA?

Answer 10

All the sample standard deviations of the ANOVA

(This gives a more accurate p-value)

Question 11

Formula for an individual Pairwise comparison

Answer 11

Question 12

CONTINUE ON PG 11