The Sign Test

Question 1

What is statistical testing?

Answer 1

Provides a way of determining whether differences in relationships between variables are significant or occurred to chance and whether hypotheses should be accepted or rejected

Question 2

What is the sign test?

Answer 2

A statistical test used to analyse the difference in scores between related items. Data should be nominal or better

Question 3

Probability

Answer 3

The likelihood than certain events occur. The accepted level of probability in psychology is 0.05 / 5%

Question 4

Critical value

Answer 4

A number the calculated value is compared to in order to determine whether it is significant or not

Question 5

Sign test steps

Answer 5

1) Convert data to nominal data
2) Add up pluses and minuses
3) S = less frequent sign
4) Compare calculated value of S with critical value. If S < critical value, the difference is significant