Question 1

Which is not a characteristic of an effective summary table?

Accepted Answer

A)  The main point should be clear within 10 seconds. 
B)  Data to be compared should be displayed in rows,not columns. 
C)  Data should be rounded to three or four significant digits. 
D)  Use space instead of lines to separate columns. 
A)  The main point should be clear within 10 seconds. 
B)  Data to be compared should be displayed in rows,not columns. 
C)  Data should be rounded to three or four significant digits. 
D)  Use space instead of lines to separate columns.

Question 2

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

Accepted Answer

A) True 
 B)False

Question 3

Ten part-time servers at a high-end restaurant were asked how many hours they worked last week,and how much they earned.The results are shown below.(a)Make a scatter plot.(b)Describe it.(c)What is your best guess of the average hourly pay?

Accepted Answer

Positive relationshi

Question 4

The distribution pictured below is:

Accepted Answer

A)  bimodal and skewed right. 
B)  bimodal and skewed left. 
C)  skewed right. 
D)  skewed left. 
A)  bimodal and skewed right. 
B)  bimodal and skewed left. 
C)  skewed right. 
D)  skewed left.

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

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

Accepted Answer

A) True 
 B)False

Question 7

A frequency distribution usually has equal bin widths.

Accepted Answer

A) True 
 B)False

Question 8

To classify prices from 62 recent home sales,Sturges' Rule would recommend:

Accepted Answer

A)  7 classes. 
B)  8 classes. 
C)  9 classes. 
D)  10 classes. 
A)  7 classes. 
B)  8 classes. 
C)  9 classes. 
D)  10 classes.

Question 9

Which is not a tip for effective column charts?

Accepted Answer

A)  Time usually goes on the horizontal axis. 
B)  Bar height should be proportional to the quantity displayed. 
C)  Label data values at the top of each bar unless graphing lots of data. 
D)  The nonzero origin rule may be waived for financial reports. 
A)  Time usually goes on the horizontal axis. 
B)  Bar height should be proportional to the quantity displayed. 
C)  Label data values at the top of each bar unless graphing lots of data. 
D)  The nonzero origin rule may be waived for financial reports.

Question 10

A scatter plot is useful in visualizing trends over time.

Accepted Answer

A) True 
 B)False

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

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

Accepted Answer

Colorful,cute subtitle adds no

Question 13

If you have 32 data points,how many classes (bins)would Sturges' Rule suggest?

Accepted Answer

A)  5 
B)  6 
C)  7 
D)  8 
A)  5 
B)  6 
C)  7 
D)  8

Question 14

Pie charts are attractive to statisticians,but are rarely used in business or general media.

Accepted Answer

A) True 
 B)False

Question 15

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

Dotplot suggests right-skewnes

Question 16

Which is a characteristic of a histogram's bars?

Accepted Answer

A)  The bar widths reveal the cumulative frequencies of data values. 
B)  The bar widths indicate class intervals and their areas indicate frequencies. 
C)  The bar widths show class intervals and their heights indicate frequencies. 
D)  The bar widths are an exact multiple of the sample size. 
A)  The bar widths reveal the cumulative frequencies of data values. 
B)  The bar widths indicate class intervals and their areas indicate frequencies. 
C)  The bar widths show class intervals and their heights indicate frequencies. 
D)  The bar widths are an exact multiple of the sample size.

Question 17

Which is not revealed on a scatter plot?

Accepted Answer

A)  Pairs of observed (xi,yi)data values 
B)  Nonlinear relationships between X and Y 
C)  Missing data values due to nonresponses 
D)  Unusual data values (outliers) 
A)  Pairs of observed (xi,yi)data values 
B)  Nonlinear relationships between X and Y 
C)  Missing data values due to nonresponses 
D)  Unusual data values (outliers)

Question 18

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.What is the fourth slowest speed in the sorted data array?

Accepted Answer

A)  61 
B)  60 
C)  55 
D)  Impossible to tell 
A)  61 
B)  60 
C)  55 
D)  Impossible to tell

Question 19

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

Accepted Answer

Attractive,attention-getting,b

Question 20

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

Dotplot suggests right-skewnes

Which is not a characteristic of an effective summary table?

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

Ten part-time servers at a high-end restaurant were asked how many hours they worked last week,and how much they earned.The results are shown below.(a)Make a scatter plot.(b)Describe it.(c)What is your best guess of the average hourly pay?

The distribution pictured below is:

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

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

A frequency distribution usually has equal bin widths.

To classify prices from 62 recent home sales,Sturges' Rule would recommend:

Which is not a tip for effective column charts?

A scatter plot is useful in visualizing trends over time.

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)?

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

If you have 32 data points,how many classes (bins)would Sturges' Rule suggest?

Pie charts are attractive to statisticians,but are rarely used in business or general media.

Which is a characteristic of a histogram's bars?

Which is not revealed on a scatter plot?

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.What is the fourth slowest speed in the sorted data array?

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

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

Exam 3: Describing Data Visually

Which is not a characteristic of an effective summary table?

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

Ten part-time servers at a high-end restaurant were asked how many hours they worked last week,and how much they earned.The results are shown below.(a)Make a scatter plot.(b)Describe it.(c)What is your best guess of the average hourly pay?

The distribution pictured below is:

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

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

A frequency distribution usually has equal bin widths.

To classify prices from 62 recent home sales,Sturges' Rule would recommend:

Which is not a tip for effective column charts?

A scatter plot is useful in visualizing trends over time.

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)?

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

If you have 32 data points,how many classes (bins)would Sturges' Rule suggest?

Pie charts are attractive to statisticians,but are rarely used in business or general media.

Which is a characteristic of a histogram's bars?

Which is not revealed on a scatter plot?

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.What is the fourth slowest speed in the sorted data array?

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

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