Binomial sign test

Question 1

When is this test used?

Answer 1

Nominal level data
Repeated measures/ matched participants design

Question 2

How to remember what test to use?

Answer 2

Nick Reads books
Nominal/repeated measures/ binomial sign test

Question 3

Step 1

Answer 3

Indicate the direction of difference from control to experimental condition with a + (if increase) or - (if decrease)

Question 4

What happens if the participant is unchanged from control to experimental condition?

Answer 4

Ignore their score completely, don’t give them a sign

Question 5

Calculated value of X

Answer 5

The number of times the least frequent sign (+ or -) shows up

Question 6

Critical value of X

Answer 6

Taken from a table
N = number of participants who showed a difference (consistent ps discared)
Two tailed hypothesis at p<0.05

Question 7

If calculated value is larger than critical value

Answer 7

the results are NOT significant at this significance level
So the probability the results are due to chance factors is higher than 5%

Question 8

If critical value is smaller than calculated value

Answer 8

The results are significantly different
So the probability the results are due to chance is smaller than 5%

Question 9

Accept the alternative hypotheses if

Answer 9

The critical value is smaller than the calculated value

Question 10

Rhyme to remember significance

Answer 10

Chi is high and so is Rho
All the rest are low= calculated value must be lower than critical value in this case to be significant