Exam 3: Graphical Descriptive Techniques II

We create a frequency distribution for interval data by counting the number of observations that fall into each of a series of intervals, called ____________________.

(Short Answer)

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Question 121

A popular method of creating distorted impressions with bar charts is to construct the bars so that their widths are proportional to their heights.

(True/False)

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Question 122

In applications involving two variables, X and Y, where one variable depends to some degree on the other, we call X the ____________________ variable.

(Short Answer)

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Question 123

Differences in the frequencies of a histogram appear to be less dramatic if you ____________________ the vertical axis.

(Short Answer)

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Question 124

Insurance Company A representative from a local insurance agency selected a random sample of insured homeowners and recorded the number of claims made in the last three years, with the following results: -{Insurance Company Narrative} What proportion of homeowners had no claims in the last three years?

(Short Answer)

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Question 125

Time-series data are often graphically depicted how?

(Multiple Choice)

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Question 126

The two most important characteristics to examine in a scatter diagram are the number of possible categories for X and Y and the number of observations in each category.

(True/False)

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Question 127

A(n) ____________________ histogram has two peaks, not necessarily equal in height.

(Short Answer)

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Question 128

The graph below represents a line graph.

(True/False)

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Question 129

The histogram below has a shape that is ____________________.

(Short Answer)

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Question 130

Briefly explain the difference between correlation and causation in terms of a relationship between X and Y.

(Essay)

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Question 131

A(n) ____________________ is a graphical representation of the cumulative relative frequencies.

(Short Answer)

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Question 132

Below are two line charts where the percentage return for a stock is shown over time.The two graphs are made from the same data set. Explain why these two line charts look different.

(Essay)

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Question 133

Briefly explain why the histogram below is misleading.

(Essay)

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Question 134

Observations that are measured at successive points in time is what type of data?

(Multiple Choice)

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Question 135

You are less likely to be misled by a graph if you:

(Multiple Choice)

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Question 136

The effect of making the slope of a line chart appear steeper can be created by:

(Multiple Choice)

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Question 137

It is speculated that the number of police officers has a negative linear relationship with number of crimes.Explain why this might be so.

(Essay)

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Question 138

The first scatter diagram below shows a stronger linear relationship than the second scatter diagram.(Assume the scales on both scatter diagrams are the same.)

(True/False)

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Question 139

How do you determine whether two interval variables have a positive linear relationship?

(Multiple Choice)

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Question 140

Showing 121 - 140 of 183

We create a frequency distribution for interval data by counting the number of observations that fall into each of a series of intervals, called ____________________.

A popular method of creating distorted impressions with bar charts is to construct the bars so that their widths are proportional to their heights.

In applications involving two variables, X and Y, where one variable depends to some degree on the other, we call X the ____________________ variable.

Differences in the frequencies of a histogram appear to be less dramatic if you ____________________ the vertical axis.

Time-series data are often graphically depicted how?

The two most important characteristics to examine in a scatter diagram are the number of possible categories for X and Y and the number of observations in each category.

A(n) ____________________ histogram has two peaks, not necessarily equal in height.

The graph below represents a line graph.

The histogram below has a shape that is ____________________.

Briefly explain the difference between correlation and causation in terms of a relationship between X and Y.

A(n) ____________________ is a graphical representation of the cumulative relative frequencies.

Below are two line charts where the percentage return for a stock is shown over time.The two graphs are made from the same data set. Explain why these two line charts look different.

Briefly explain why the histogram below is misleading.

Observations that are measured at successive points in time is what type of data?

You are less likely to be misled by a graph if you:

The effect of making the slope of a line chart appear steeper can be created by:

It is speculated that the number of police officers has a negative linear relationship with number of crimes.Explain why this might be so.

The first scatter diagram below shows a stronger linear relationship than the second scatter diagram.(Assume the scales on both scatter diagrams are the same.)

How do you determine whether two interval variables have a positive linear relationship?

What Is Statistics

Graphical Descriptive Techniques I

Numerical Descriptive Techniques

Data Collection and Sampling

Probability

Random Variables and Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Introduction to Estimation

Introduction to Hypothesis Testing

Inference About a Population

Inference About Comparing Two Populations

Analysis of Variance

Chi-Squared Tests

Simple Linear Regression and Correlation

Multiple Regression

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