Chi Square - Test

Find the degrees of freedom.

• 4
• 5
• 6
• 7

Which test would you use to see if gender is a factor choosing a person’s favorite fruit?  900 college students were surveyed and their favorite fruit recorded.

• Chi-square Goodness of Fit Test
• Chi-Square Test for Homogeneity
• Chi-Square Test for Independence/Association
• Not a Chi-square test

What are the expected counts of a female who likes Pepsi?

• 10.5
• 11
• 14.5
• 6.3

What is the null hypothesis?

• Injury type is independent of position played
• Injury type is dependent on the position played independent

What is the

χ² _calculated value for the following situation.

• 6.65

• 6.66

• 0.00991

• 1

If we are testing at a 5% significance level and our p-value is 0.00453, what is the conclusion?

• Accept Ho

• Reject Ho

• We need to know chi-squared

• You cannot do this problem without a calculator

Given that a student is male, what is the probability that maths is their favorite?

• 0.491

• 0.225

• 0.443

• .508

In a chi square goodness of fit test, you must have

• counts for two categorical variables
• proportions for one categorical variable
• counts for one categorical variable
• proportions for two categorical variables

A chi-square test is used to test whether a 0 to 9 spinner is "fair" (that is, the outcomes are all equally likely).  The spinner is spun 100 times, and the results are recorded.  The degrees of freedom for the test will be

• 8
• 9
• 10
• 99

Which of the following makes for a reasonable null hypothesis for a Chi-Square Goodness of Fit Test?

• The distribution of political views this year is 0.24 liberal, 0.38 moderate, 0.38 conservative.

• The distribution of political views this year differs from a distribution of 0.24 liberal, 0.38 moderate, 0.38 conservative.

• The distribution of political views this year is independent of gender.

• This is not a situation where using a Chi-Square Goodness of Fit Test is appropriate.