A student was interested in the cigarette-smoking habits of college students and collected data from an unbiased random sample of students. The data are summarized in the following table: What is wrong with this frequency table?
A)The number of males does not equal the sum of males that smoke and do not smoke.
B)The classes are not mutually exclusive.
C)There are too many classes.
D)Class limits cannot be computed.

Question

A student was interested in the cigarette-smoking habits of college students and collected data from an unbiased random sample of students. The data are summarized in the following table:  What is wrong with this frequency table?
A)The number of males does not equal the sum of males that smoke and do not smoke. 
B)The classes are not mutually exclusive. 
C)There are too many classes. 
D)Class limits cannot be computed.

Quizplus · Accepted Answer

The classes are not mutually exclusive, as a student can either smoke or not smoke, but not both at the same time. This means that some students may be counted twice or not at all, leading to inaccurate frequency counts.

A Student Was Interested in the Cigarette-Smoking Habits of College