Chi- Square Test

Question 1

Chi- square test

Answer 1

Tests whether the 2 variables are independent or related

Question 2

Contingency table

Answer 2

Used to display the observed and expected for most chi-square tests

Question 3

A chi- square test examines associations between which general type of variables

Answer 3

Categorical

Question 4

What does the chi-square (x^2) calculation measure?

Answer 4

Difference in the observed and some categorical compared to expected values under null-hypothesis of no relationship

Question 5

What does a higher (x^2) value mean?

Answer 5

Greater distance between observed and expected values

Question 6

What is the null hypothesis of a chi-square test?

Answer 6

No relationship between the categories

Question 7

What does the p- value of a chi- square test represent?

Answer 7

P- value is the proportion of permutations that produced x^2 values higher than the X^2 values listed above for the real data

Question 8

Problem of multiple comparisons

Answer 8

There are more than 1000 possible comparisons that we can make