Question 1

Scatter plots are used to visualize association in samples of paired data (X,Y).

Accepted Answer

A) True 
 B)False  True

Question 2

Briefly list strengths and weaknesses of this display.Cite specific principles of good graphs,as well as offering your own general interpretation.

Accepted Answer

Eye-catching and colorful,but title is vague,units are not given,too many pie slices,3D makes it hard to assess size of slices,no source,and no year.

Question 3

Effective summary tables generally

Accepted Answer

A) have very detailed column headings and footnotes. 
B) round their data to three or four significant digits. 
C) use plenty of heavy vertical lines to separate the columns. 
D) have the raw data listed in a footnote for clarity. 
A) have very detailed column headings and footnotes. 
B) round their data to three or four significant digits. 
C) use plenty of heavy vertical lines to separate the columns. 
D) have the raw data listed in a footnote for clarity. B

Question 4

Which is a not a characteristic of pie charts?

Accepted Answer

A) Pie charts can only convey a general idea of the data values. 
B) Pie charts are ineffective when they have too many slices. 
C) Exploded and 3D pie charts will allow more "slices." 
D) Pie chart data always represent parts of a whole (e.g. ,market share). 
A) Pie charts can only convey a general idea of the data values. 
B) Pie charts are ineffective when they have too many slices. 
C) Exploded and 3D pie charts will allow more "slices." 
D) Pie chart data always represent parts of a whole (e.g. ,market share).

Question 5

Students were given a take-home statistics assignment and were asked to write down how long it took them (in minutes).Their answers are shown below.(a)Make a dot plot.(b)Use your judgment to construct a frequency distribution using whatever classes (bins)you wish.(c)Make a histogram.(d)Describe the distribution.(e)Did your bin choices agree with Sturges' Rule? If not,why not?

Accepted Answer

@#IMG-DLM& The dot plot suggests right-skewness.Hi

Question 6

Which is not a poor graphing technique?

Accepted Answer

A) Gratuitous pictures 
B) Labeled axis scales 
C) 3D bar charts 
D) Rotated axis 
A) Gratuitous pictures 
B) Labeled axis scales 
C) 3D bar charts 
D) Rotated axis

Question 7

Log scales are common because most people are familiar with them.

Accepted Answer

A) True 
 B)False

Question 8

A population has 75 observations.One class interval has a frequency of 15 observations.The relative frequency in this category is

Accepted Answer

A) 0.20 
B) 0.10 
C) 0.15 
D) 0.75 
A) 0.20 
B) 0.10 
C) 0.15 
D) 0.75

Question 9

A common error with pie charts is using too few "slices."

Accepted Answer

A) True 
 B)False

Question 10

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 11

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.How many vehicles were traveling exactly the speed limit (70 mph)?

Accepted Answer

A) 0 
B) 1 
C) 19 
D) Impossible to tell 
A) 0 
B) 1 
C) 19 
D) Impossible to tell

Question 12

In a bimodal histogram,the two highest bars will have the same height.

Accepted Answer

A) True 
 B)False

Question 13

Craig operates a part-time snow-plowing business using a 2002 GMC 2500 HD extended cab short box truck.Describe Craig's gasoline mileage based on this histogram of 195 tanks of gas.

Accepted Answer

Strong clustering ne

Question 14

A dot plot would be useful in visualizing scores on an exam in a class of 30 students.

Accepted Answer

A) True 
 B)False

Question 15

Which data would be suitable for a pie chart?

Accepted Answer

A) Percent vote in the last election by party (Democrat,Republican,Other) 
B) Retail prices of six major brands of color laser printers 
C) Labor cost per vehicle for 10 major world automakers 
D) Prices paid by 10 students for their accounting textbooks 
A) Percent vote in the last election by party (Democrat,Republican,Other) 
B) Retail prices of six major brands of color laser printers 
C) Labor cost per vehicle for 10 major world automakers 
D) Prices paid by 10 students for their accounting textbooks

Question 16

It is possible to construct a histogram or frequency polygon with open-ended classes.

Accepted Answer

A) True 
 B)False

Question 17

Students were asked to record how many hours they worked at an outside job last week.Their answers are shown below.(a)Make a dot plot.(b)Use your judgment to construct a frequency distribution using whatever classes (bins)you wish.(c)Make a histogram.(d)Describe the distribution.(e)Did your bin choices agree with Sturges' Rule? If not,why not?

Accepted Answer

@#IMG-DLM& The dot plot suggests right-skewness.Hi

Question 18

A column chart can sometimes be used instead of a line chart for time series data.

Accepted Answer

A) True 
 B)False

Question 19

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

Accepted Answer

A) True 
 B)False

Question 20

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

Accepted Answer

A) True 
 B)False

Scatter plots are used to visualize association in samples of paired data (X,Y).

Briefly list strengths and weaknesses of this display.Cite specific principles of good graphs,as well as offering your own general interpretation.

Effective summary tables generally

Which is a not a characteristic of pie charts?

Which is not a poor graphing technique?

Log scales are common because most people are familiar with them.

A population has 75 observations.One class interval has a frequency of 15 observations.The relative frequency in this category is

A common error with pie charts is using too few "slices."

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

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.How many vehicles were traveling exactly the speed limit (70 mph)?

In a bimodal histogram,the two highest bars will have the same height.

Craig operates a part-time snow-plowing business using a 2002 GMC 2500 HD extended cab short box truck.Describe Craig's gasoline mileage based on this histogram of 195 tanks of gas.

A dot plot would be useful in visualizing scores on an exam in a class of 30 students.

Which data would be suitable for a pie chart?

It is possible to construct a histogram or frequency polygon with open-ended classes.

A column chart can sometimes be used instead of a line chart for time series data.

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

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

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

Chi-Square Tests

Filters

Exam 3: Describing Data Visually

Scatter plots are used to visualize association in samples of paired data (X,Y).

Briefly list strengths and weaknesses of this display.Cite specific principles of good graphs,as well as offering your own general interpretation.

Effective summary tables generally

Which is a not a characteristic of pie charts?

Which is not a poor graphing technique?

Log scales are common because most people are familiar with them.

A population has 75 observations.One class interval has a frequency of 15 observations.The relative frequency in this category is

A common error with pie charts is using too few "slices."

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

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.How many vehicles were traveling exactly the speed limit (70 mph)?

In a bimodal histogram,the two highest bars will have the same height.

Craig operates a part-time snow-plowing business using a 2002 GMC 2500 HD extended cab short box truck.Describe Craig's gasoline mileage based on this histogram of 195 tanks of gas.

A dot plot would be useful in visualizing scores on an exam in a class of 30 students.

Which data would be suitable for a pie chart?

It is possible to construct a histogram or frequency polygon with open-ended classes.

A column chart can sometimes be used instead of a line chart for time series data.

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

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

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

Chi-Square Tests

Filters