Question 1

Compared to a dot plot, we lose some detail when we present data in a frequency distribution.

Accepted Answer

A) True 
 B)False  True

Question 2

Which of these deficiencies would be considered a major graphical deception?

Accepted Answer

A) Vague or unclear source 
B) Using more than one color or font 
C) Bar widths proportional to bar height 
D) Using a dramatic graph title 
A) Vague or unclear source 
B) Using more than one color or font 
C) Bar widths proportional to bar height 
D) Using a dramatic graph title C

Question 3

Excel's pyramid chart is generally preferred to a plain 2D column chart.

Accepted Answer

A) True 
 B)False  False

Question 4

Sturges' Rule should override judgment about the "right" number of histogram bins.

Accepted Answer

A) True 
 B)False

Question 5

A scatter plot requires two quantitative variables (i.e., not categorical data).

Accepted Answer

A) True 
 B)False

Question 6

Excel's pyramid charts:

Accepted Answer

A) are generally preferred to pie charts. 
B) should be avoided despite their visual appeal. 
C) are generally preferred to line charts. 
D) show trends more clearly than column charts. 
A) are generally preferred to pie charts. 
B) should be avoided despite their visual appeal. 
C) are generally preferred to line charts. 
D) show trends more clearly than column charts.

Question 7

An open-ended bin (e.g., "50 and over") might be seen in a frequency distribution when:

Accepted Answer

A) some data values are not integers. 
B) data values are nonnumerical. 
C) extremely large data values exist. 
D) some data are missing. 
A) some data values are not integers. 
B) data values are nonnumerical. 
C) extremely large data values exist. 
D) some data are missing.

Question 8

Which is not a characteristic of using a log scale to display time series data?

Accepted Answer

A) A log scale helps if we are comparing changes in two time series of dissimilar magnitude. 
B) General business audiences find it easier to interpret a log scale. 
C) If you display data on a log scale, equal distances represent equal ratios. 
A) A log scale helps if we are comparing changes in two time series of dissimilar magnitude. 
B) General business audiences find it easier to interpret a log scale. 
C) If you display data on a log scale, equal distances represent equal ratios.

Question 9

It is easier to read the data values on a 3D column chart than on a 2D column chart.

Accepted Answer

A) True 
 B)False

Question 10

Which is not considered a deceptive graphical technique?

Accepted Answer

A) Nonzero origin 
B) Elastic graph proportions 
C) Dramatic title 
D) Axis demarcations 
A) Nonzero origin 
B) Elastic graph proportions 
C) Dramatic title 
D) Axis demarcations

Question 11

Pie charts are useful in displaying frequencies that sum to a total.

Accepted Answer

A) True 
 B)False

Question 12

Excel's 3D pie charts are usually clearer than 2D pie charts.

Accepted Answer

A) True 
 B)False

Question 13

Which criterion is least likely to be used in choosing bins (classes) in a frequency distribution?

Accepted Answer

A) Following Sturges' Rule 
B) Selecting "nice" class (bin) limits 
C) Using aesthetic judgment 
D) Always starting at zero 
A) Following Sturges' Rule 
B) Selecting "nice" class (bin) limits 
C) Using aesthetic judgment 
D) Always starting at zero

Question 14

Below is a sorted stem-and-leaf diagram for the measured speeds (miles per hour) of 49 randomly chosen vehicles on highway I-80 in Nebraska. The modal class is: stem unit $ =10 $
leaf unit $ =1 $
$\begin{array}{rrl}
\text { Frequency } & \text { Stem  } & \text { Leaf } \
1 & 4 & 9 \
1 & 5 & 5 \
17 & 6 & 01222455556688999 \
19 & 7 & 0111233345666778999 \
7 & 8 & 0133557 \
4 & 9 & 0122 \
4 9&
\end{array}$

Accepted Answer

A) 60 but less than 70. 
B) 70 but less than 80. 
C) 80 but less than 90. 
D) impossible to determine. 
A) 60 but less than 70. 
B) 70 but less than 80. 
C) 80 but less than 90. 
D) impossible to determine.

Question 15

A pie chart can generally be used instead of a bar chart.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following is true?

Accepted Answer

A) Line charts are not used for cross-sectional data. 
B) Line charts are useful for visualizing categorical data. 
C) Pyramid charts are generally preferred instead of column charts. 
D) Pie charts can generally be used instead of bar charts. 
A) Line charts are not used for cross-sectional data. 
B) Line charts are useful for visualizing categorical data. 
C) Pyramid charts are generally preferred instead of column charts. 
D) Pie charts can generally be used instead of bar charts.

Question 17

Which is not a characteristic of a log scale for time series data?

Accepted Answer

A) Log scales are useful when data change by an order of magnitude. 
B) The distance from 5 to 50 is the same as the distance from 50 to 500. 
C) On a log scale, equal distances represent equal ratios. 
D) Log scales are generally familiar to the average reader. 
A) Log scales are useful when data change by an order of magnitude. 
B) The distance from 5 to 50 is the same as the distance from 50 to 500. 
C) On a log scale, equal distances represent equal ratios. 
D) Log scales are generally familiar to the average reader.

Question 18

Dot plots are similar to histograms with many bins (classes).

Accepted Answer

A) True 
 B)False

Question 19

The Pareto chart is used to display the "vital few" causes of problems.

Accepted Answer

A) True 
 B)False

Question 20

When using a dot plot with a small sample, which is least apparent?

Accepted Answer

A) Dispersion of data values within the array 
B) The overall shape of the distribution 
C) Central tendency of data in the data set 
D) Location of data values within the array 
A) Dispersion of data values within the array 
B) The overall shape of the distribution 
C) Central tendency of data in the data set 
D) Location of data values within the array

Compared to a dot plot, we lose some detail when we present data in a frequency distribution.

Which of these deficiencies would be considered a major graphical deception?

Excel's pyramid chart is generally preferred to a plain 2D column chart.

Sturges' Rule should override judgment about the "right" number of histogram bins.

A scatter plot requires two quantitative variables (i.e., not categorical data).

Excel's pyramid charts:

An open-ended bin (e.g., "50 and over") might be seen in a frequency distribution when:

Which is not a characteristic of using a log scale to display time series data?

It is easier to read the data values on a 3D column chart than on a 2D column chart.

Which is not considered a deceptive graphical technique?

Pie charts are useful in displaying frequencies that sum to a total.

Excel's 3D pie charts are usually clearer than 2D pie charts.

Which criterion is least likely to be used in choosing bins (classes) in a frequency distribution?

Below is a sorted stem-and-leaf diagram for the measured speeds (miles per hour) of 49 randomly chosen vehicles on highway I-80 in Nebraska. The modal class is: stem unit $=10$ leaf unit $=1$ Frequency Stem Leaf 1 4 9 1 5 5 17 6 01222455556688999 19 7 0111233345666778999 7 8 0133557 4 9 0122 49

A pie chart can generally be used instead of a bar chart.

Which of the following is true?

Which is not a characteristic of a log scale for time series data?

Dot plots are similar to histograms with many bins (classes).

The Pareto chart is used to display the "vital few" causes of problems.

When using a dot plot with a small sample, which is least apparent?

Overview of Statistics

Data Collection

Descriptive Statistics

Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions and Estimation

One-Sample Hypothesis Tests

Two-Sample Hypothesis Tests

Analysis of Variance

Simple Regression

Multiple Regression

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Chi-Square Tests

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Exam 3: Describing Data Visually

Compared to a dot plot, we lose some detail when we present data in a frequency distribution.

Which of these deficiencies would be considered a major graphical deception?

Excel's pyramid chart is generally preferred to a plain 2D column chart.

Sturges' Rule should override judgment about the "right" number of histogram bins.

A scatter plot requires two quantitative variables (i.e., not categorical data).

Excel's pyramid charts:

An open-ended bin (e.g., "50 and over") might be seen in a frequency distribution when:

Which is not a characteristic of using a log scale to display time series data?

It is easier to read the data values on a 3D column chart than on a 2D column chart.

Which is not considered a deceptive graphical technique?

Pie charts are useful in displaying frequencies that sum to a total.

Excel's 3D pie charts are usually clearer than 2D pie charts.

Which criterion is least likely to be used in choosing bins (classes) in a frequency distribution?

A pie chart can generally be used instead of a bar chart.

Which of the following is true?

Which is not a characteristic of a log scale for time series data?

Dot plots are similar to histograms with many bins (classes).

The Pareto chart is used to display the "vital few" causes of problems.

When using a dot plot with a small sample, which is least apparent?

Overview of Statistics

Data Collection

Descriptive Statistics

Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions and Estimation

One-Sample Hypothesis Tests

Two-Sample Hypothesis Tests

Analysis of Variance

Simple Regression

Multiple Regression

Time Series Analysis

Chi-Square Tests

Nonparametric Tests

Quality Management

Filters