8. If a frequency distribution hasopen-ended intervals at the extremes, which me

Question

8.

If a frequency distribution hasopen-ended intervals at the extremes, which measure of centrallocation is the most difficult to estimate?

A) median
B) mode
C) mean
D) all of the above
E) none of the above

12.

The distribution of Student's thas:

27.

A student was interested in the cigarette smoking habits ofcollege students and collected data from an unbiased random sampleof 125 students. The data is summarized in the following table:

Male: 50
Males who smoke: 20
Males who do not smoke: 30

Female: 75
Females who smoke: 25
Females who do not smoke: 50

Why is the table not a frequency distribution?

A) The number of males does notequal the sum of males that smoke and do not smoke.
B) The classes are not mutuallyexclusive.
C) There are too manyclasses.
D) Class limits cannot becomputed.

Explanation / Answer

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