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Chapter 1: Q 2.3. (page 35)

Use the back-to-back stem plot in Figure 1.15to write a few sentences comparing the number of pairs of shoes owned by males and females. Be sure to address shape, center, spread, and outliers.

Ignoring the outlier, the shape of the distribution is,

(a) skewed to the right and (c) skewed to the left. (e) skewed to the middle.

(b) roughly symmetric (d) bimodal.

Short Answer

Expert verified

The correct option is (c) Curve is skewed to the left.

Step by step solution

01

Given Information

The stem pot is

02

Concept

An outlier is a value that is notably different from other values in a random sampling of the population.

03

Explanation

This shows that residents aged 65 and up are the most common. If Alaska is ignored, stem and leaf numbers will range from 9 to 17 The stem and leaf of the need are practically symmetrical. There isn't a single outlier. More values are to the left of the highest point than to the right. As a result, the curve is negatively skewed to the left.

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Most popular questions from this chapter

Where do the young live? Below is a stem plot of the percent of residents aged 25 to 34 in each of the 50 states. As in the stem plot for older residents (page 35), the stems are whole percent and the leaves are tenths of a percent. This time, each stem has been split in two, with values having leaves 0 through4 placed on one stem, and values ending in 5 through 9 placed on another stem.

(a) Why did we split stems?

(b) Utah has the highest percentage of residents aged 25 to 34. What is that percent? Why do you think Utah has an unusually high percentage of residents in this age group?

(c) Describe the shape, center, and spread of the distribution, ignoring Utah.

The percentage of students with less than $10 in their possession is closest to

(a) 30%. (b) 35%. (c) 50%. (d) 60%. (e) 70%

The histogram below shows the distribution of the percent of women aged 15 and over who have never married in each of the 50 states and the District of Columbia.

In about what percent of states have at least 30% of women aged 15 and over never married?

(a) 4%(b) 7%(c)10%(d) 14%(e) 32%

The National Survey of Adolescent Health interviewed several thousand teens (grades 7to 12). One question asked was 鈥淲hat do you think are the chances you will be married in the next ten years?鈥� Here is a two-way table of the responses by gender:

What percent of females thought that they were almost certain to be married in the next ten years?

(a) About 16% (c) About 40% (e) About 61%

(b) About 24% (d) About 45%

The mean salary of all female workers is \(35,000 The mean salary of all male workers is \)41,000 What must be true about the mean salary of all workers?

(a) It must be \(38,000

(b) It must be larger than the median salary.

(c) It could be any number between \)35,000 and \(41,000

(d) It must be larger than \)38,000

(e) It cannot be larger than $40,000
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