Select all the correct answers.
A survey of 30 students each from three different high schools was conducted to find the number of hours they spent every month on volunteer work. Based on the median values of the data sets, represented here as dot plots, which conclusions are true?
a.)the students in school 2 generally spend more time doing volunteer work than the students in school 1.
b.)The students in school 1 generally spend more time doing volunteer work than the students in school 2.
c.)The students in school 1 generally spend more time doing volunteer work than the students in school 3.
D.)The students in school 1 generally spend less time doing volunteer work than the students in school 3.
E.)The students in school 3 generally spend more time doing volunteer work than the students in school 2.
Answers
Given : A survey of 30 students each from three different high schools was conducted to find the number of hours they spent every month on volunteer work
To Find : Based on the median values of the data sets, represented here as dot plots, which conclusions are true
a.)the students in school 2 generally spend more time doing volunteer work than the students in school 1.
b.)The students in school 1 generally spend more time doing volunteer work than the students in school 2.
c.)The students in school 1 generally spend more time doing volunteer work than the students in school 3.
D.)The students in school 1 generally spend less time doing volunteer work than the students in school 3.
E.)The students in school 3 generally spend more time doing volunteer work than the students in school 2.
Solution:
From dot plot
School 1 median lies at 8 hrs
School 2 median lies at 10 hrs
School 3 median lies at 9 hrs
Correct statements are
the students in school 2 generally spend more time doing volunteer work than the students in school 1.
The students in school 1 generally spend less time doing volunteer work than the students in school 3.
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