A statistics professor classifies his students according to their grade point average (GPA)and their gender.The resulting cross-classification table is shown below. \[\begin{array}{l} \quad \quad \quad \quad \quad \quad \quad \quad \quad \quad \quad \text { GPA}\\ \begin{array} { | l | c c c | } \hline \text { Gender } & \text { Under 2.5 } & 2.5 - 3.5 & \text { Over 3.5 } \\ \hline \text { Mala } & 5 & 25 & 10 \\ \text { Female } & 10 & 20 & 30 \\ \hline \end{array} \end{array}\] Which of the following describes the relationship between GPA and gender shown by this table?

A) A higher percentage of females have GPAs over 3.5,compared to males. B) A lower percentage of females have GPAs over 3.5,compared to males. C) Females and males each have the same percentage of GPAs over 3.5. D) You cannot compare male and female GPAs because the total number in each group is not the same. A) A higher percentage of females have GPAs over 3.5,compared to males. B) A lower percentage of females have GPAs over 3.5,compared to males. C) Females and males each have the same percentage of GPAs over 3.5. D) You cannot compare male and female GPAs because the total number in each group is not the same.

Business School Graduates A sample of business school graduates were asked what their major was.The results are shown in the following frequency distribution. \[\begin{array} { | l | l | } \hline \text { Majar of Graduates } & \text { Number of gradiuates } \\ \hline \text { Accounting } & 58 \\ \text { Finance } & 42 \\ \text { Management } & 38 \\ \text { Marketing } & 52 \\ \text { Other } & 10 \\ \hline \end{array}\] -{Business School Graduates Narrative} Draw a pie chart of this data.Are you able to reconstruct the original data from this pie chart alone?

@#IMG-DLM& No;you cannot reconstruct the

Using the following cross-classification table,draw two bar charts that compare pet ownership for males vs.females.Are gender and pet ownership related? \[\begin{array} { | l | c | c | } \hline & \text { Own a pet } & \text { Dan't awn a pet } \\ \hline \text { Females } & 75 & 25 \\ \text { Males } & 40 & 60 \\ \hline \end{array}\]

The first "side-by-side" bar chart below

Exam 2: Graphical Descriptive Techniques I

A survey of 100 adults was conducted to see if gender is related to pet ownership.The results are summarized in the bar chart below.Which of the following statements describes the relationship?

(Multiple Choice)

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Question 21

To describe the relationship between two nominal variables you make a scatter diagram and look for a correlation.

(True/False)

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Question 22

A statistics professor classifies his students according to their grade point average (GPA)and their gender.The resulting cross-classification table is shown below. GPA Gender Under 2.5 2.5-3.5 Over 3.5 Mala 5 25 10 Female 10 20 30 Which of the following describes the relationship between GPA and gender shown by this table?

(Multiple Choice)

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Question 23

Which situation identifies when to use pie charts and/or bar charts?

(Multiple Choice)

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Question 24

In the following cross-classification table,gender and car ownership are related. Own a car Dan't awn a car Females 60 30 Males 40

(True/False)

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Question 25

Which of the following situations is best suited for a pie chart?

(Multiple Choice)

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Question 26

A bar chart is used to represent interval data.

(True/False)

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Question 27

Business School Graduates A sample of business school graduates were asked what their major was.The results are shown in the following frequency distribution. Majar of Graduates Number of gradiuates Accounting 58 Finance 42 Management 38 Marketing 52 Other 10 -{Business School Graduates Narrative} Draw a pie chart of this data.Are you able to reconstruct the original data from this pie chart alone?

(Essay)

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Question 28

Which of the following statements about pie charts is false?

(Multiple Choice)

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Question 29

A category in a pie chart that contains 50% of the observations is represented by a slice of the pie that is equal to ____________________ degrees.

(Essay)

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Question 30

All-Nighters A sample of 400 students at a certain university was taken after the midterm;200 students reported staying up all night before the midterm and the other 200 students did not.Researchers recorded whether each student did well or poorly on the midterm.The following table contains the results. Did Well on Did Poorly on Midterm Midterm Stayed up all night 60 140 Did not stay up all night 120 80 -{All-Nighter Narrative} Of those who stayed up all night before the midterm,what percentage did well on the midterm?

(Essay)

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Question 31

A(n) chart is often used to display frequencies;a(n) chart graphically shows relative frequencies.

(Essay)

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Question 32

One of the advantages of a pie chart is that it clearly shows that the total percentages of all the categories add to 100%.

(True/False)

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Question 33

In purchasing an automobile,there are a number of variables to consider.The body style of the car (sedan,coupe,wagon,etc. )is an example of a(n)____________________ variable.

(Essay)

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Question 34

Using the following cross-classification table,draw two pie charts that compare pet ownership for males vs.females.Are gender and pet ownership related? Own a pet Dan't awn a pet Females 75 25 Males 40 60

(Essay)

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Question 35

The bar charts below summarize data collected on 100 adults regarding gender and pet ownership.Which of the following statements is (are)true based on this chart?

(Multiple Choice)

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Question 36

Explain the difference between ordinal data and interval data.

(Essay)

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Question 37

Bar and pie charts are graphical techniques for nominal data.The former focus the attention on the frequency of the occurrences of each category,and the later emphasizes the proportion of occurrences of each category.

(True/False)

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Question 38

Using the following cross-classification table,draw two bar charts that compare pet ownership for males vs.females.Are gender and pet ownership related? Own a pet Dan't awn a pet Females 75 25 Males 40 60

(Essay)

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Question 39

Your final grade in a course (A,B,C,D,E)is a nominal variable.

(True/False)

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Question 40

Exam 2: Graphical Descriptive Techniques I

A survey of 100 adults was conducted to see if gender is related to pet ownership.The results are summarized in the bar chart below.Which of the following statements describes the relationship?

To describe the relationship between two nominal variables you make a scatter diagram and look for a correlation.

Which situation identifies when to use pie charts and/or bar charts?

In the following cross-classification table,gender and car ownership are related. Own a car Dan't awn a car Females 60 30 Males 40

Which of the following situations is best suited for a pie chart?

A bar chart is used to represent interval data.

Which of the following statements about pie charts is false?

A category in a pie chart that contains 50% of the observations is represented by a slice of the pie that is equal to ____________________ degrees.

A(n)____________________ chart is often used to display frequencies;a(n)____________________ chart graphically shows relative frequencies.

One of the advantages of a pie chart is that it clearly shows that the total percentages of all the categories add to 100%.

In purchasing an automobile,there are a number of variables to consider.The body style of the car (sedan,coupe,wagon,etc. )is an example of a(n)____________________ variable.

Using the following cross-classification table,draw two pie charts that compare pet ownership for males vs.females.Are gender and pet ownership related? Own a pet Dan't awn a pet Females 75 25 Males 40 60

The bar charts below summarize data collected on 100 adults regarding gender and pet ownership.Which of the following statements is (are)true based on this chart?

Explain the difference between ordinal data and interval data.

Bar and pie charts are graphical techniques for nominal data.The former focus the attention on the frequency of the occurrences of each category,and the later emphasizes the proportion of occurrences of each category.

Using the following cross-classification table,draw two bar charts that compare pet ownership for males vs.females.Are gender and pet ownership related? Own a pet Dan't awn a pet Females 75 25 Males 40 60

Your final grade in a course (A,B,C,D,E)is a nominal variable.

What Is Statistics

Graphical Descriptive Techniques II

A: Numerical Descriptive Techniques

B: Numerical Descriptive Techniques

C: Numerical Descriptive Techniques

Data Collection and Sampling

Probability

A: Random Variables and Discrete Probability Distributions

B: Random Variables and Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Introduction to Estimation

Introduction to Hypothesis Testing

Inference About a Population

Inference About Comparing Two Populations

Analysis of Variance

Chi-Squared Tests

A: Simple Linear Regression and Correlation

B: Simple Linear Regression and Correlation

Multiple Regression

Model Building

Nonparametric Statistics

Time-Series Analysis and Forecasting

Statistical Process Control

Decision Analysis

Conclusion

Filters

A(n) chart is often used to display frequencies;a(n) chart graphically shows relative frequencies.