Chi Squared

Question 1

When performing a chi square goodness of fit test the degrees of freedom is..

Answer 1

The number of proportions - 1

Question 2

When performing a chi square test for independence or homogenity the degrees of freedom is ….

Answer 2

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

Question 3

The formula for calculating the chi square test statistic is

Answer 3

(observed value - expected value)^2/expected value

Question 4

Goodness of fit expected counts

Answer 4

(n)(expected “p”)

Question 5

Expected values for test for independence and homogeneity

Answer 5

(sum row)(sum column)/(sample size) *USE MATRIX*

Question 6

To test whether proportions are the same for two populations, we use the..

Answer 6

Homogeneity Test

Question 7

To test if x and y are independent, we use the..

Answer 7

Test for Independence