The Michigan Department of Transportation (M-DOT)is working on a major project: 80% of the highways in Michigan need to be repaved.To speed completion of this project,many contractors will be working for M-DOT.Contractors are currently bidding on the next part of the project.To help make a decision about which contractor to hire,M-DOT collects many variables besides just the estimated cost.One of those variables is the contractor's estimate of the number of workdays required to finish the job.Twenty contractors have bid on the next job.The boxplot below represents their estimates of the number of work days required. What is (approximately)the interquartile range,based on the boxplot?

Question

The Michigan Department of Transportation (M-DOT)is working on a major project: 80% of the highways in Michigan need to be repaved.To speed completion of this project,many contractors will be working for M-DOT.Contractors are currently bidding on the next part of the project.To help make a decision about which contractor to hire,M-DOT collects many variables besides just the estimated cost.One of those variables is the contractor's estimate of the number of workdays required to finish the job.Twenty contractors have bid on the next job.The boxplot below represents their estimates of the number of work days required.  What is (approximately)the interquartile range,based on the boxplot?

Quizplus · Accepted Answer

The interquartile range (IQR) is represented by the length of the box in the boxplot. From the given boxplot, we can see that the length of the box is approximately 270 days.

The Michigan Department of Transportation (M-DOT)is Working on a Major