Log out Go to App
Go to App

Learning Materials

Features

Discover

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.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Feeling sleepy? The first four students to arrive for a first-period statistics class were asked how much sleep (to the nearest hour) they got last night. Their responses were 7,7,9,and 9

(a) Find the standard deviation from its definition. That is, find the deviations of each observation from the mean, square the deviations, then obtain the variance and the standard deviation.

(b) Interpret the value of sx you obtained in (a).

(c) Do you think it’s safe to conclude that the mean amount of sleep for all 30 students in this class is close to 8 hours? Why or why not?

Oatmeal and cholesterol Do eating oatmeal reduce cholesterol? An advertisement included the following graph as evidence that the answer is “Yes.”

(a) How is this graph misleading?

(b) Make a new graph that isn’t misleading. What do you conclude about the effect of eating oatmeal on cholesterol reduction?

Baseball paradox Most baseball hitters perform differently against right-handed and left-handed pitching. Consider two players, Joe and Moe, both of whom bat right-handed. The table below records their performance against right-handed and left-handed pitchers:

(a) Use these data to make a two-way table of player (Joe or Moe) versus outcome (hit or no hit).

(b) Show that Simpson’s paradox holds: one player has a higher overall batting average, but the other player hits better against both left-handed and right-handed pitching.

(c) The manager doesn’t believe that one player can hit better against both left-handers and right-handers yet have a lower overall batting average. Explain in

simple language why this happens to Joe and Moe.

Population pyramids A population pyramid is a helpful graph for examining the distribution of a country’s population. Here is a population pyramid for Vietnam in the year 2010. Describe what the graph tells you about Vietnam’s population that year. Be specific.

Forty students took a statistics examination having a maximum of 50 points. The score distribution is given in the following stem-and-leaf plot:


The third quartile of the score distribution is equal to (a) 45. (b) 44. (c) 43. (d) 32. (e) 23.
See all solutions

Recommended explanations on Math Textbooks

Discrete Mathematics

Read Explanation

Geometry

Read Explanation

Decision Maths

Read Explanation

Statistics

Read Explanation

Logic and Functions

Read Explanation

Mechanics Maths

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free