15
QuizMultiple Choice

Factoring Polynomials: Double Grouping — Cumulative exam

Question 15 • Common Core Algebra I B-IC

The data set represents the number of rings each person in a room is wearing.0, 2, 4, 0, 2, 3, 2, 8, 6What is the interquartile range of the data?

Answer
A
2
B
3
C
4
D
6

Explanation

First, order the values: 0, 0, 2, 2, 2, 3, 4, 6, 8. The median is 2, so the lower half is 0, 0, 2, 2 (with Q1 = 1) and the upper half is 3, 4, 6, 8 (with Q3 = 5). The interquartile range is Q3 − Q1 = 5 − 1 = 4, so the answer is 4.

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