/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 18 The U.S. Department of Education... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 1: Problem 18

The U.S. Department of Education reported that \(14 \%\) of adults were classified as being below a basic literacy level, \(29 \%\) were classified as being at a basic literacy level, \(44 \%\) were classified as being at an intermediate literacy level, and \(13 \%\) were classified as being at a proficient level (2003 National Assessment of Adult Literacy). a. Is the variable literacy level categorical or numerical? b. Would it be appropriate to display the given information using a dotplot? Explain why or why not. c. Construct a bar chart to display the given data on literacy level.

Short Answer

Expert verified
a. Literacy level is a categorical variable. b. It's not appropriate to display the data using a dotplot as the variable is categorical. c. A bar chart with the literacy levels on x-axis and their percentages on y-axis can be used to visualize the data.

Step by step solution

01

Identify the Type of Variable

Literacy level is a categorical variable as it describes categories or groups rather than quantities.
02

Justify the Appropriateness of a Dotplot

Dotplots are typically used for displaying small sets of numerical data, not categorical. Hence, it's not appropriate to display the given information using a dotplot since literacy level is a categorical variable.
03

Construct a Bar Chart

To display the literacy levels, use a bar chart. Label the x-axis with the 4 categories of literacy levels: below basic, basic, intermediate, and proficient. Label the y-axis with the percentages and draw 4 bars corresponding to the 4 literacy levels according to their respective percentages.

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.

Over 30 million students worldwide already upgrade their learning with 91影视!

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

The Computer Assisted Assessment Center at the University of Luton published a report titled "Technical Review of Plagiarism Detection Software." The authors of this report asked faculty at academic institutions about the extent to which they agreed with the statement "Plagiarism is a significant problem in academic institutions." The responses are summarized in the accompanying table. Construct a bar chart for these data. $$ \begin{array}{lc} \text { Response } & \text { Frequency } \\ \hline \text { Strongly disagree } & 5 \\ \text { Disagree } & 48 \\ \text { Not sure } & 90 \\ \text { Agree } & 140 \\ \text { Strongly agree } & 39 \\ & \end{array} $$

A 2005 AP-IPSOS poll found that \(21 \%\) of American adults surveyed said their child was heavier than doctors recommend. The reasons given as the most important contributing factor to the child's weight problem is summarized in the accompanying table. $$ \begin{array}{lr} \text { Lack of exercise } & 38 \% \\ \text { Easy access to junk food } & 23 \% \\ \text { Genetics } & 12 \% \\ \text { Eating unhealthy food } & 9 \% \\ \text { Medical condition } & 8 \% \\ \text { Overeating } & 7 \% \end{array} $$ a. Construct a bar chart for the data on the most important contributing factor. b. Do you think that it would be reasonable to combine some of these contributing factors into a single category? If so, which categories would you combine and why?

For each of the following situations, give a set of possible data values that might arise from making the observations described. a. The manufacturer for each of the next 10 automobiles to pass through a given intersection is noted. b. The grade point average for each of the 15 seniors in a statistics class is determined. c. The number of gas pumps in use at each of 20 gas stations at a particular time is determined. d. The actual net weight of each of 12 bags of fertilizer having a labeled weight of \(50 \mathrm{lb}\) is determined. e. Fifteen different radio stations are monitored during a 1-hr period, and the amount of time devoted to commercials is determined for each.

Each year, U.S. News and World Report publishes a ranking of U.S. business schools. The following data give the acceptance rates (percentage of applicants admitted) for the best 25 programs in the most recent survey: $$ \begin{array}{lllllllll} 16.3 & 12.0 & 25.1 & 20.3 & 31.9 & 20.7 & 30.1 & 19.5 & 36.2 \\ 46.9 & 25.8 & 36.7 & 33.8 & 24.2 & 21.5 & 35.1 & 37.6 & 23.9 \\ 17.0 & 38.4 & 31.2 & 43.8 & 28.9 & 31.4 & 48.9 & & \end{array} $$ Construct a dotplot, and comment on the interesting features of the plot.

The supervisors of a rural county are interested in the proportion of property owners who support the construction of a sewer system. Because it is too costly to contact all 7000 property owners, a survey of 500 owners (selected at random) is undertaken. Describe the population and sample for this problem.
See all solutions

Recommended explanations on Math Textbooks

Calculus

Read Explanation

Statistics

Read Explanation

Geometry

Read Explanation

Theoretical and Mathematical Physics

Read Explanation

Decision Maths

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.