introduction to statistical testing

Question 1

what is the sign test?

Answer 1

a statistical test used to analyse the difference of scores between related items

Question 2

when do you use the sign test?

Answer 2

• repeated measure design or matched pair design
• data is nominal
• test of difference, not correlation

Question 3

how do you carry out the sign test?

Answer 3

• find out observed value
• find N (number of ppts)
• compare the observed value with the critical value
• if your observed value is less than or equal to the critical value, you have a significant value and can reject the null hypothesis

Question 4

what should you assume the significance level is if it isn’t given to you?

Answer 4

0.05/5%

Question 5

what is probability (p)?

Answer 5

refers to the likelihood that certain evens will occur