Chi-Square Tests

How do you find the number of degrees of freedom fro a GOF test?

What conditions do you need to check for a chi-square test?

A regular die is rolled 270 times. If each number 1-6 is equally likely then how many times would you expect each number to occur?

Tags

CCSS.7.SP.C.6

The P-value for a chi-square goodness-of-fit test is 0.0129. The correct conclusion is:

The chi square statistic is

The expected count of females who respond "almost certain" is

• 487.7

• 525

• 965

• 1038.8

• 1174

Tags

CCSS.HSS.MD.A.2

The degrees of freedom for the chi-square test for this two-way table are

• 4

• 8

• 10

• 20

• 4876

For these data, the chi-square test statistic is 69.8 with a p-value of approximately 0. Assuming that the researchers used a significance level of 0.05, which of the following is true?

• A type I error is possible.

• A type II error is possible.

• Both a type I and a type II error are possible.

• There is no chance of making a type I or type II error because the p-value is approximately zero.

• There is no chance of making a type I or type II error because the calculations are correct.

What must be true about the expected values in a chi square test?

• greater than or equal to 2

• greater than or equal to 5

• greater than or equal to 10

• greater than or equal to 30

Find the degrees of freedom.

• 4

• 5

• 6

• 7