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Chapter 1: Q. 80. (page 53)

Here are the amounts of money (cents) in coins carried by 10 students in a statistics class: 50, 35, 0, 46, 86, 0, 5, 47, 23, 65. To make a stemplot of these data, you would use stems

a. 0, 2, 3, 4, 6, 8.

b. 0, 1, 2, 3, 4, 5, 6, 7, 8.

c. 0, 3, 5, 6, 7.

d. 00, 10, 20, 30, 40, 50, 60, 70, 80, 90.

e. None of these.

Short Answer

Expert verified

The correct option is (a)

(a) Roughly symmetric and unimodal.

Step by step solution

01

Given information. 

50, 35, 0, 46, 86, 0, 5, 47, 23, 65

02

Step 2. Make a stemplot of these data using stems.

Because the highest bars are roughly in the middle of the histogram, the given histogram is roughly symmetric. Furthermore, the bars to the left of 67 appear to be nearly identical to the bars to the right of 67.

Because the histogram contains only one main peak, which is centred around the height of 68, it is unimodal (or equivalently single-peaked).

As a results:

(a) Roughly symmetric and unimodal.

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