Mathematical content

Question 1

What is nominal data

Answer 1

Categorical data

Question 2

What is statistical testing

Answer 2

Way of determining if the null hypothesis should be accepted or rejected

Question 3

What is the sign test used for

Answer 3

Used for nominal data
Used for repeated measures design data
Test of difference

Question 4

What is the accepted probability in psychology

Answer 4

Accepted value is 5% (0.05)

Question 5

How do you carry out the sign test

Answer 5

1) Use + or - to indicate difference between scores
2) Calculate S value (Less frequent sign)
3) Calculate N value (Total signs)
4) Find critical S value (Use sign table, 0.05 probability and DF/N)

A one tailed hypothesis = Directional
A two tailed hypothesis = Non directional

4) See if results are statistically significant

To see if results are significant, calculated value(s) must be less than or equal to critical value(S)