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Chapter 2: Q 1.4. (page 89)

Estimate Q1, Q3, and the IQR of the distribution.

Short Answer

Expert verified

Q1 = 13min Q3 = 32min and IQR = 19min

Step by step solution

01

Step 1. Given

Graph of call length (minutes) Vs cumulative frequency (%)

02

Step 2. Concept

A cumulative relative frequency graph can be used to depict an individual's location within a distribution or to find a specific percentile within the distribution.

03

Step 3. Explanation

From the above graph it is observed that, Q1 = 13min

Q3=32minIQR=32−13=19min

Thus, Q1=13minQ3=32min and IQR=19min

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