Does a person's letter grade in statistics depend on whether he or she is a member of a Greek organization? In three statistics classes, data is collected on the letter grades of students belonging to Greek organizations and of students who are not members.Which of these is the research hypothesis for this study?
A) Members and nonmembers of Greek organizations do not tend to differ in letter grades.
B) Members and nonmembers of Greek organizations tend to differ in letter grades.
C) There is a relationship between Greek organization membership and letter grade.
D) The distributions of letter grades for members and nonmembers of Greek organizations is the same.

Question

Quizplus · Accepted Answer

The research hypothesis for this study would be that members and nonmembers of Greek organizations tend to differ in their letter grades. This hypothesis implies that there is a relationship between Greek organization membership and letter grade, but also makes a specific prediction about the direction of that relationship (i.e. that grades will be different for members and nonmembers). This hypothesis could be tested using statistical analyses to compare the mean or median letter grades for members vs. nonmembers, or to examine any patterns in the distribution of grades across the two groups. Option A is too general and does not make a specific prediction about any potential differences between the groups. Option C is also too general and does not specify whether the relationship between the two variables is positive or negative. Option D is not a hypothesis, but rather a specific statement about the distributions of letter grades, which may or may not be relevant to the research question.

Does a Person's Letter Grade in Statistics Depend on Whether