Exam 4: Displaying and Describing Categorical Data

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Consider the following to answer the question(s) below: A large national retailer of electronics conducted a survey to determine consumer preferences for various brands of digital cameras. The table summarizes responses by brand and gender. -Of the consumers who are male, the percentage who prefer Pentax is

(Multiple Choice)

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Question 21

Which of the following is a reason for constructing a joint frequency distribution?

(Multiple Choice)

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Question 22

Write a sentence or two about the conditional relative frequency distribution of the brands among female respondents.

(Essay)

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Question 23

Consider the following to answer the question(s) below: A full service brokerage firm gathered information on how their clients were investing for retirement. Based on age, clients were categorized according to where the largest percentage of their retirement portfolio was invested and shown in the table below. -Of the clients over age 50, the percentage who invest in mutual funds is

(Multiple Choice)

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Question 24

Consider the following side-by-side bar chart for the data: Does the chart indicate that brand preference is independent of gender? Explain.

(Essay)

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Question 25

Consider the following to answer the question(s) below: The option to buy extended warranties is commonplace with most electronics purchases. Does the type of purchase affect a consumer's willingness to pay extra for an extended warranty? Data for 420 consumers who purchased digital cameras and laptop computers from a leading electronics retailer are summarized in the table. -A bar chart or a pie chart can be used to display what type of data?

(Multiple Choice)

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Question 26

A contingency table is used to display

(Multiple Choice)

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Question 27

Consider the following to answer the question(s) below: A full service brokerage firm gathered information on how their clients were investing for retirement. Based on age, clients were categorized according to where the largest percentage of their retirement portfolio was invested. The table below summarized the data. -Find each of the following percentages. a. What percentage of the clients who invest in mutual funds are over age 50? b. What percentage of clients over age 50 invest in mutual funds? c. What percentage of the mutual fund investors are over age 50?

(Essay)

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Question 28

One characteristic of a bar chart is

(Multiple Choice)

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Question 29

What is the marginal distribution of age?

(Essay)

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Question 30

Consider the following to answer the question(s) below: A large national retailer of electronics conducted a survey to determine consumer preferences for various brands of digital cameras. The table summarizes responses by brand and gender. -Of the consumers who prefer Canon, what percentage is female?

(Multiple Choice)

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Question 31

The city council has just voted to pass the budget for next year. If you were writing a report describing the budget so the citizens could understand how the total tax dollars will be spent, which of the following graphs might be most appropriate?

(Multiple Choice)

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Question 32

Showing 21 - 32 of 32

Which of the following is a reason for constructing a joint frequency distribution?

Write a sentence or two about the conditional relative frequency distribution of the brands among female respondents.

Consider the following side-by-side bar chart for the data: Does the chart indicate that brand preference is independent of gender? Explain.

A contingency table is used to display

One characteristic of a bar chart is

What is the marginal distribution of age?

The city council has just voted to pass the budget for next year. If you were writing a report describing the budget so the citizens could understand how the total tax dollars will be spent, which of the following graphs might be most appropriate?

Data

Surveys and Sampling

Displaying and Describing Quantitative Data

Scatterplots, Association, and Correlation

Introduction to Linear Regression

Randomness and Probability

Random Variables and Probability Distributions

Sampling Distributions

Confidence Intervals for Proportions

Testing Hypotheses About Proportions

Confidence Intervals and Hypothesis Tests for Means

Comparing Two Means

Design of Experiments and Analysis of Variance Anova

Inference for Counts: Chi-Square Tests

Nonparametric Methods

Inference for Regression

Understanding Regression Residuals

Multiple Regression

Building Multiple Regression Models

Time Series Analysis

Decision Making and Risk

Quality Control

Exploring and Collecting Data

Understanding Probability Distributions and Statistical Inference

Exploring Relationships Among Variables

Using Statistics for Decision Making

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