Question 1

Which data would be suitable for a pie chart?

Accepted Answer

A) Whirlpool Corporation's sales revenue for the last five years 
B) Oxnard University student category (undergraduate,masters,doctoral) 
C) Average SAT scores for entering freshmen at 10 major U.S.universities 
D) U.S.toy imports from China over the past decade 
A) Whirlpool Corporation's sales revenue for the last five years 
B) Oxnard University student category (undergraduate,masters,doctoral) 
C) Average SAT scores for entering freshmen at 10 major U.S.universities 
D) U.S.toy imports from China over the past decade

Question 2

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.Which is the modal class?

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 3

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 4

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 5

A line chart would not be suitable to display which data?

Accepted Answer

A) U.S.oil imports from OPEC nations for the last 20 years 
B) Annual compensation of the top 50 CEOs 
C) Exxon-Mobil's quarterly sales data for the last five years 
D) Daily stock market closing prices of Microsoft for the past month 
A) U.S.oil imports from OPEC nations for the last 20 years 
B) Annual compensation of the top 50 CEOs 
C) Exxon-Mobil's quarterly sales data for the last five years 
D) Daily stock market closing prices of Microsoft for the past month

Question 6

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 mode?

Accepted Answer

A) 62 
B) 79 
C) 65 
D) Impossible to tell 
A) 62 
B) 79 
C) 65 
D) Impossible to tell

Question 7

Which statement is not true concerning Sturges' Rule?

Accepted Answer

A) It proposes adding one class (bin)to the histogram for each extra observation. 
B) If you double the sample size,you should add one class. 
C) Its purpose is to tell how many classes (bins)to use in a frequency distribution. 
D) It is only a guideline and may be overruled by other considerations. 
A) It proposes adding one class (bin)to the histogram for each extra observation. 
B) If you double the sample size,you should add one class. 
C) Its purpose is to tell how many classes (bins)to use in a frequency distribution. 
D) It is only a guideline and may be overruled by other considerations.

Question 8

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

Accepted Answer

A) True 
 B)False

Question 9

Sturges' Rule is merely a suggestion,not an ironclad requirement.

Accepted Answer

A) True 
 B)False

Question 10

A frequency distribution is a tabulation of n data values into classes called bins.

Accepted Answer

A) True 
 B)False

Question 11

Which is not a reason why pie charts are popular in business?

Accepted Answer

A) They can convey a general idea of the data to a nontechnical audience. 
B) They can display major changes in parts of a whole (e.g. ,market share). 
C) They are more precise than line charts,despite their low visual impact. 
D) They can be labeled with data values to facilitate interpretation. 
A) They can convey a general idea of the data to a nontechnical audience. 
B) They can display major changes in parts of a whole (e.g. ,market share). 
C) They are more precise than line charts,despite their low visual impact. 
D) They can be labeled with data values to facilitate interpretation.

Question 12

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

Accepted Answer

Attractive,but area trick is d

Question 13

Except for the Y-axis scaling,a histogram will look the same if we use relative frequencies instead of raw frequencies (with the same bin limits).

Accepted Answer

A) True 
 B)False

Question 14

Excel's pyramid charts make it easier to read the data values.

Accepted Answer

A) True 
 B)False

Question 15

Which is not considered a deceptive graphical technique?

Accepted Answer

A) Undefined units 
B) 2D graphs 
C) Authority figures 
D) Distracting pictures 
A) Undefined units 
B) 2D graphs 
C) Authority figures 
D) Distracting pictures

Question 16

A column chart would be least suitable to display which data?

Accepted Answer

A) Annual compensation of 500 company CEOs 
B) U.S.exports to its six largest trading partners 
C) Exxon-Mobil's quarterly sales for the last four years 
D) One-year CD interest rates paid by the eight largest U.S.banks 
A) Annual compensation of 500 company CEOs 
B) U.S.exports to its six largest trading partners 
C) Exxon-Mobil's quarterly sales for the last four years 
D) One-year CD interest rates paid by the eight largest U.S.banks

Question 17

Pivot tables

Accepted Answer

A) are similar in purpose to simple 2D pie charts. 
B) show how the data "pivot" around a point. 
C) show cross-tabulations of data. 
D) are not really tables at all. 
A) are similar in purpose to simple 2D pie charts. 
B) show how the data "pivot" around a point. 
C) show cross-tabulations of data. 
D) are not really tables at all.

Question 18

Because most data values are on the left,we would say that this dot plot (burglary rates per 100,000 persons in 350 U.S.cities)shows a distribution that is skewed to the left (negatively skewed).

Accepted Answer

A) True 
 B)False

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

Sober,clear,attractive graph w

Question 20

Below is a frequency distribution of earnings of 50 contractors in a country.   Regarding this distribution,which of the following is correct?

Accepted Answer

A) The frequency distribution contains too many class intervals. 
B) The class interval limits are ambiguous. 
C) Too few classes were chosen. 
D) The class intervals are too wide. 
A) The frequency distribution contains too many class intervals. 
B) The class interval limits are ambiguous. 
C) Too few classes were chosen. 
D) The class intervals are too wide.

Which data would be suitable for a pie chart?

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.Which is the modal class?

Which is not revealed on a scatter plot?

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

A line chart would not be suitable to display which 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.What is the mode?

Which statement is not true concerning Sturges' Rule?

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

Sturges' Rule is merely a suggestion,not an ironclad requirement.

A frequency distribution is a tabulation of n data values into classes called bins.

Which is not a reason why pie charts are popular in business?

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

Except for the Y-axis scaling,a histogram will look the same if we use relative frequencies instead of raw frequencies (with the same bin limits).

Excel's pyramid charts make it easier to read the data values.

Which is not considered a deceptive graphical technique?

A column chart would be least suitable to display which data?

Pivot tables

Because most data values are on the left,we would say that this dot plot (burglary rates per 100,000 persons in 350 U.S.cities)shows a distribution that is skewed to the left (negatively skewed).

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

Below is a frequency distribution of earnings of 50 contractors in a country. Regarding this distribution,which of the following is correct?

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

Which data would be suitable for a pie chart?

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.Which is the modal class?

Which is not revealed on a scatter plot?

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

A line chart would not be suitable to display which 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.What is the mode?

Which statement is not true concerning Sturges' Rule?

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

Sturges' Rule is merely a suggestion,not an ironclad requirement.

A frequency distribution is a tabulation of n data values into classes called bins.

Which is not a reason why pie charts are popular in business?

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

Except for the Y-axis scaling,a histogram will look the same if we use relative frequencies instead of raw frequencies (with the same bin limits).

Excel's pyramid charts make it easier to read the data values.

Which is not considered a deceptive graphical technique?

A column chart would be least suitable to display which data?

Pivot tables

Because most data values are on the left,we would say that this dot plot (burglary rates per 100,000 persons in 350 U.S.cities)shows a distribution that is skewed to the left (negatively skewed).

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

Below is a frequency distribution of earnings of 50 contractors in a country. Regarding this distribution,which of the following is correct?

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