Use the following information to answer questions (18) - (19). Bullying is a problem faced by many schools. To see if student perceptions of how well a high school is doing in dealing with bullying are related to class standing, a small survey was taken. Forty students were randomly selected from Central High School and asked their level of agreement to the following statement: "Central High School is doing a good job dealing with bullying in the school." The numbers in the parentheses are the expected values if "view on bullying" and "class standing" are independent.
-Suppose we want to test to see if there is an association between class standing and view on bullying. Choose the statement that is true about the hypothesis test or choose (d) if all statements are false.
A)The chi-square test is appropriate because two observed values are greater than 5.
B)The chi-square test is appropriate because only one observed value is 0.
C)The chi-square test is not appropriate because some of the expected cell counts are less than 5.
D)All statements are false.

Question

Use the following information to answer questions (18) - (19). Bullying is a problem faced by many schools. To see if student perceptions of how well a high school is doing in dealing with bullying are related to class standing, a small survey was taken. Forty students were randomly selected from Central High School and asked their level of agreement to the following statement: "Central High School is doing a good job dealing with bullying in the school." The numbers in the parentheses are the expected values if "view on bullying" and "class standing" are independent. 
-Suppose we want to test to see if there is an association between class standing and view on bullying. Choose the statement that is true about the hypothesis test or choose (d) if all statements are false.
A)The chi-square test is appropriate because two observed values are greater than 5. 
B)The chi-square test is appropriate because only one observed value is 0. 
C)The chi-square test is not appropriate because some of the expected cell counts are less than 5. 
D)All statements are false.

Quizplus · Accepted Answer

The chi-square test's appropriateness often hinges on expected cell counts in a contingency table; specifically, it is generally recommended that no more than 20% of the expected counts be less than 5, and all expected counts should be 1 or greater. Statement C correctly identifies a common guideline for when the chi-square test may not be appropriate.

Use the Following Information to Answer Questions (18) - (19)