Chi-squared test

Question 1

When would psychologists use a chi-squared test?

Answer 1

• nominal data
• Frequencies for different categories
• Independent groups design

Question 2

How do you calculate the degrees of freedom in a chi-squared test?

Answer 2

(Numbers of rows - 1) x (number of columns -1)

Question 3

What do you do once you have your X2 value in the chi-squared test?

Answer 3

Look at the critical values table at which degree of freedom you have at the p=0.05 level depending on if you have a one tailed or two tailed hypothesis

Question 4

What conclusions can be drawn if the X2 value is smaller than the critical value in chi-squared test?

Answer 4

The results are not significant
Accept the null hypothesis
Reject the alternative hypothesis

Question 5

What conclusions can be drawn if the X2 value is greater than the critical value in the chi-squared test?

Answer 5

The results are significant
Reject the null hypothesis
Accept the alternative hypothesis