QM module

Question 1

What’s the ‘one way’ in ‘one way ANOVA’ all about?

Answer 1

It means one independent variable

The assumption is that this variable varies between two groups

Question 2

When doing fucking ANOVA, what is the specific SS that is essentially just the sum of the SS of each population?

Answer 2

SS fucking WITHIN

Question 3

When doing fucking ANOVA, what is the specific SS that is the fucking SS of the whole sample?

Answer 3

SS fucking TOTAL

Question 4

When doing fucking ANOVA, what is the specific SS that is essentially just the fucking TOTAL minus the fucking sum of the SS for each group

Answer 4

the SS fucking BETWEEN

Question 5

So what exactly is the F statistic?

Answer 5

The ratio of the BETWEEN groups variation / and WITHIN groups variation

Question 6

Why can’t we use the sum of squares directly to compute the F ratio?

Answer 6

Because it is sensitive to sample size

Question 7

Whats the df for the WITHIN

Answer 7

N - k

That is - number of participants minus number of groups

Question 8

What’s the df for BETWEEN

Answer 8

k - 1

That is - number of groups minus 1

Question 9

What’s the df for the TOTAL

Answer 9

The usual

N - 1