Question

1. - / 16 points illowskyintrostat1 2.4.089.hw. a survey was conducted of 130 purchasers of new bmw 3 series cars, 130 purchasers of new bmw 5 series cars, and 130 purchasers of new bmw 7 series cars. in it, people were asked the age they were when they purchased their car. the following box plots display the results. (box plots for bmw 3, 5, 7 series with age axis from 25 to 80) part (a) part (b) part (c) part (d) look at the bmw 5 series. which quarter has the smallest spread of data? first quarter second quarter third quarter fourth quarter what is the spread?

Explanation:

To determine which quarter of the BMW 5 series has the smallest spread, we analyze the box - plot. The spread of a quarter in a box - plot is the difference between the upper and lower bounds of that quarter. The first quarter (Q1) is from the minimum to the first quartile, the second quarter (Q2) is from the first quartile to the median, the third quarter (Q3) is from the median to the third quartile, and the fourth quarter is from the third quartile to the maximum. By visually inspecting the box - plot of the BMW 5 series, we can see that the second quarter (from the first quartile to the median) has the smallest range (spread) among the four quarters.

Answer:

second quarter