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1. Twenty high school students were asked how many hours they worked on a particular homework assignment. The answers are summarized in the table below:
1. Twenty high school students were asked how many hours they worked on a particular homework assignment. The answers are summarized in the table below:
Hours Worked: 0 1 2 3 4
Frequency: 4 12 1 1 2
a)Find the inter quartile range of the number of hours worked.
(A) 0
(B) 1
(C) 1.5
(D) 2
(E) 2.5
b)Find the sample standard deviation of the number hours studied.Choose the alternative closest to your answer.
(A) 1.16
(B) 1.36
(C) 1.58
(D) 3.12
(E) 4.63
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