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 0 answersPost by elida bani on July 2, 2012Example 5:New ProductWhen calculating degree of freedom (v), should the expression in parenthesis be (4-1)instead of (4x1)? 0 answersPost by Joyce Cheung on May 16, 2012Chi-Square Tests: One Way and Two WayFor example 3: debt, what is the formula to calculate the expected value? 0 answersPost by Matt Lin on March 18, 2012What formula you used to calculate the Expected value? 0 answersPost by Jamias Clark on August 4, 2011i was wondering where doe the explanation start for the two way test? i think its the stolen car example but im not really sure.. Please help. 0 answersPost by Beiquan Cao on April 24, 2010In debt Example it should be 196 men, not 191 when listing the table.

Chi-Square Tests: One Way and Two Way

• For a goodness of fit test, the degrees of freedom are ν = k − 1 where

• k is the number of “groups.” This is always a right-tailed test.

• For a test of independence, the degrees of freedom are ν = (R − 1)(C − 1) where R are the number of rows in the contingency table and C are the number of columns in the contingency table. The null hypothesis is always that the two attributes are independent.

• For a test of homogeneity, the degrees of freedom are ν = (R − 1)(C −1) where R are the number of rows in the contingency table and C are the number of columns in the contingency table. The null hypothesis is always that the two or more populations are the same.

Chi-Square Tests: One Way and Two Way

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

• Intro 0:00
• Goodness of Fit Test 0:07
• Right-Tailed Test
• Example 1: Die Rolls 1:16
• Example 2: Stolen Vehicles 3:31
• Test of Independence 7:02
• Example 3: Debt 7:51
• Example 4: Contraceptive Use 13:14
• Test of Homogeneity 16:31
• Example 5: New Product 17:09
• Example 6: Oil 21:24