CK-12 Probability and Statistics - Advanced

10.2. Test of Independence http://www.ck12.org

a. 450

b. 280

c. 612

d. 782

5. What is the total number of observations in this sample?
   a. 782
   b. 533
   c. 1, 062
   d. 612


6. What is the expected frequency for the number of males that did not study abroad?
   a. 161
   b. 208
   c. 111
   d. 129


7. How many Degrees of Freedom are in this example?
   a. 1
   b. 2
   c. 3
   d. 4


8. True or False: Our null hypothesis would be that females are as likely as males to study abroad.


9. What is the Chi-Square statistic for this example?
   a. 1. 60
   b. 2. 45
   c. 3. 32
   d. 3. 98


10. If the Chi-Square critical value at.05 and 1 degree of freedom is 3.81 and we have a calculated Chi-Square
    value of 2.22, we would:
    a. reject the null hypothesis
    b. fail to reject the null hypothesis


11. True or False: We use the Test of Homogeneity to evaluate the equality of several samples of certain variables.


12. The Test of Homogeneity is carried out the exact same way as:
    a. The Goodness-of-Fit test
    b. The Test of Independence

Review Answers

1. To examine if two variables are related.


2. True


3. A


4. D


5. C


6. A


7. A


8. True


9. A