G&E: Chi-squared test Flashcards
1
Q
What is the null hypothesis?
A
There is no significant different between the observed and expected results.
2
Q
Chi-squared test
A
A statistical test that’s used to see if the results of an experiment support a theory.
3
Q
What do you compare the X2 value to?
A
A critical value
4
Q
What does it mean if the X2 value is greater than or equal to the critical value?
A
Reject the null hypothesis - there is a significant difference between the observed and expected results.
5
Q
What does it mean if the X2 value is smaller than the critical value?
A
Cannot reject null hypothesis = there is no significant difference between the observed and expected results.
6
Q
Degrees of freedom
A
Number of items - 1
