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3 years ago

What is the interquartile range of the data set?

2 answers:

5 0

The interquartile range (IQR) is a measure of variability, based on dividing a data setinto quartiles. Quartiles divide a rank-ordered data set into four equal parts. The values that divide each part are called the first, second, and third quartiles; and they are denoted by Q1, Q2, and Q3, respectively.

ad-work [718]3 years ago

5 0

20,25,30,30,31,40,41,49
Q1 = (25+30)/2 = 27.5
Q3 = (40+41)/2 = 40.5
 Q2=inter-quartile range = Q3 - Q1 = 40.5 - 27.5 = 13

answer is 13

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Step-by-step explanation:

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At Brighton Middle School, Mr. Yule asked 50 randomly selected students from each grade level about their favorite subject, and

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Yes, he made a reasonable inference by saying about 25 percent of students choose the science.

Step-by-step explanation:

Given that

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Now as Mr. Yule said "about 25" percent of students choose the science it can be treated as reasonable approximation.

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Percentage of student who choose science = $\frac{48*100}{200}$

Percentage of student who choose science = 24 %

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3 years ago

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