Question 1

Most time series contain the same four components Name two of them.

Accepted Answer

any two of the following: 1) l

Question 2

In what way(s) can a poorly done pie chart be misleading?

Accepted Answer

A) Changes in labeling on one or more axes. 
B) Not starting at zero as a way to exaggerate trends. 
C) Using poor information. 
D) All of the above. 
A) Changes in labeling on one or more axes. 
B) Not starting at zero as a way to exaggerate trends. 
C) Using poor information. 
D) All of the above.

Question 3

Name two of the five most common problems in plots, graphs and pictures.

Accepted Answer

Any two of the following: 1) o

Question 4

For Questions use the following narrative:
Narrative: Average hourly earnings
The graph below, done in 1998 by the Bureau of Labor Statistics, represents the average hourly earnings of U.S.workers from 1947-1998 (in 1998 dollars).
  
-{Average hourly earnings narrative} The designers of this graph expressed all their data in terms of 1998 dollars.Explain why they did this, and whether or not you think this is a good idea.

Accepted Answer

It is important to use fair an

Question 5

The following is an example of what type of data picture?

Accepted Answer

A) A pie chart. 
B) A bar graph. 
C) A pictogram. 
D) A line graph. 
A) A pie chart. 
B) A bar graph. 
C) A pictogram. 
D) A line graph.

Question 6

Explain why it is not wise to forecast a trend very far into the future.

Accepted Answer

what appears as a trend in a s

Question 7

A(n) __________ is useful for displaying the relationship between two measurement variables.

Accepted Answer

The answer of A(n) __________ is useful for displaying the...

Question 8

Measurement data displayed in terms of how they change over time can not be represented by what type of statistical picture?

Accepted Answer

A) A line graph. 
B) A bar graph. 
C) A histogram. 
D) All of the above can be used. 
A) A line graph. 
B) A bar graph. 
C) A histogram. 
D) All of the above can be used.

Question 9

Which of the following describes the result of seasonally adjusting a time series (such as the unemployment rate)?

Accepted Answer

A) The seasonal extremes have been removed. 
B) One time period no longer dominates each year as the high or the low. 
C) The variability is reduced. 
D) All of the above. 
A) The seasonal extremes have been removed. 
B) One time period no longer dominates each year as the high or the low. 
C) The variability is reduced. 
D) All of the above.

Question 10

Name a situation in which a scatterplot is most useful for displaying measurement data.

Accepted Answer

For displaying the r

Question 11

Which of the following is not a characteristic of a good plot, graph, or picture of data?

Accepted Answer

A) A source must be given for the data. 
B) The picture should contain as much information, color, and extra material as possible to keep readers interested. 
C) The labels should be clear and informative. 
D) All of the above are good characteristics of a good plot, graph, or picture of data. 
A) A source must be given for the data. 
B) The picture should contain as much information, color, and extra material as possible to keep readers interested. 
C) The labels should be clear and informative. 
D) All of the above are good characteristics of a good plot, graph, or picture of data.

Question 12

Which of the following does not describe a time series plot with an irregular cycle?

Accepted Answer

A) It repeatedly goes up and back down smoothly, but with an irregular pattern so as not to be predictable. 
B) It randomly fluctuates with no pattern at all. 
C) Its irregularity can often be explained by outside factors such as political or social situations. 
D) All of the above. 
A) It repeatedly goes up and back down smoothly, but with an irregular pattern so as not to be predictable. 
B) It randomly fluctuates with no pattern at all. 
C) Its irregularity can often be explained by outside factors such as political or social situations. 
D) All of the above.

Question 13

For Questions use the following narrative:
Narrative: Average hourly earnings
The graph below, done in 1998 by the Bureau of Labor Statistics, represents the average hourly earnings of U.S.workers from 1947-1998 (in 1998 dollars).
  
-{Average hourly earnings narrative} Describe the scale used on the vertical axis and whether or not it is appropriate.

Accepted Answer

The scale starts at $6 and goe

Question 14

Which of the following does not describe a time series?

Accepted Answer

A) A time series is a record of a variable across time. 
B) A time series is usually measured at equally spaced time intervals. 
C) A time series is a data set on numerous individuals measured in units of time (for example, time until completion of the obstacle course; or time until graduation). 
D) All of the above describe a time series. 
A) A time series is a record of a variable across time. 
B) A time series is usually measured at equally spaced time intervals. 
C) A time series is a data set on numerous individuals measured in units of time (for example, time until completion of the obstacle course; or time until graduation). 
D) All of the above describe a time series.

Question 15

Name 3 of the 12 questions you should ask when you look at a statistical picture, before trying to interpret it.

Accepted Answer

any 3 of the following are ok: 1) does t

Question 16

The following is an example of what type of data picture?

Accepted Answer

A) A line graph. 
B) A scatterplot. 
C) A Cartesian coordinate graph. 
D) None of the above. 
A) A line graph. 
B) A scatterplot. 
C) A Cartesian coordinate graph. 
D) None of the above.

Question 17

Although a scatterplot can be more difficult to read than a line graph, it displays more information.Explain why.

Accepted Answer

A scatterplot shows outliers,

Exam 9: Plots, Graphs, and Pictures

Most time series contain the same four components Name two of them.

In what way(s) can a poorly done pie chart be misleading?

Name two of the five most common problems in plots, graphs and pictures.

The following is an example of what type of data picture?

Explain why it is not wise to forecast a trend very far into the future.

A(n) __________ is useful for displaying the relationship between two measurement variables.

Measurement data displayed in terms of how they change over time can not be represented by what type of statistical picture?

Which of the following describes the result of seasonally adjusting a time series (such as the unemployment rate)?

Name a situation in which a scatterplot is most useful for displaying measurement data.

Which of the following is not a characteristic of a good plot, graph, or picture of data?

Which of the following does not describe a time series plot with an irregular cycle?

Which of the following does not describe a time series?

Name 3 of the 12 questions you should ask when you look at a statistical picture, before trying to interpret it.

The following is an example of what type of data picture?

Although a scatterplot can be more difficult to read than a line graph, it displays more information.Explain why.

The Benefits and Risks of Using Statistics

Reading the News

Measurements, Mistakes, and Misunderstandings

How to Get a Good Sample

Experiments and Observational Studies

Getting the Big Picture

Summarizing and Displaying Measurement Data

Bell-Shaped Curves and Other Shapes

Relationships Between Measurement Variables

Relationships Can Be Deceiving

Relationships Between Categorical Variables

Statistical Significance for 2 2 Tables

Understanding Probability and Long-Term Expectations

Understanding Uncertainty Through Simulation

Psychological Influences on Personal Probability

When Intuition Differs From Relative Frequency

Understanding the Economic News

The Diversity of Samples From the Same Population

Estimating Proportions With Confidence

The Role of Confidence Intervals in Research

Rejecting Chancetesting Hypotheses in Research

Hypothesis Testingexamples and Case Studies

Significance, Importance, and Undetected Differences

Meta-Analysis: Resolving Inconsistencies Across Studies

Ethics in Statistical Studies

Putting What You Have Learned to the Test

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