Car buyers were asked to indicate the car dealer they believed offered the best overall service.The four choices were Contour Motors (C),Modern Chrysler (M),Tonneau Auto (T),and Uncanny Chevrolet (U).The following data were obtained: \(\begin{array}{llllllllll} \mathrm{T} & \mathrm{C} & \mathrm{C} & \mathrm{C} & \mathrm{U} & \mathrm{C} & \mathrm{M} & \mathrm{T} & \mathrm{C} & \mathrm{U} \\ \mathrm{U} & \mathrm{M} & \mathrm{C} & \mathrm{M} & \mathrm{T} & \mathrm{C} & \mathrm{M} & \mathrm{M} & \mathrm{C} & \mathrm{M} \\ \mathrm{T} & \mathrm{C} & \mathrm{C} & \mathrm{T} & \mathrm{U} & \mathrm{M} & \mathrm{M} & \mathrm{C} & \mathrm{C} & \mathrm{T} \\ \mathrm{T} & \mathrm{H} & \mathrm{C} & \mathrm{H} & \mathrm{T} & \mathrm{M} & \mathrm{M} & \mathrm{C} & \mathrm{H} & \mathrm{T} \end{array}\) What percentage of car buyers identified Contour Motors as having the best overall service?

A) 1/4 = 0.25 or 25% B) 14/40 = 0.35 or 35% C) 14% D) None of these choices. A) 1/4 = 0.25 or 25% B) 14/40 = 0.35 or 35% C) 14% D) None of these choices.

Exam 2: Graphical Descriptive Techniques I

A college 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 2.0 2.0- 3. 0 Over 3.0 Male 10 30 15 Female 15 25 35 If you made a pie chart for male GPAs and a pie chart for female GPAs,those pie charts would look the same.

(True/False)

4.9/5

(28)

Question 41

The percentage of observations in each combination of the cross-classification table must be equal in order to show two nominal variables are not related.

(True/False)

4.9/5

(28)

Question 42

A pie chart shows the ____________________ of individuals that fall into each category.

(Essay)

4.9/5

(38)

Question 43

Provide one example of ordinal data;one example of nominal data;and one example of interval data.

(Essay)

4.7/5

(25)

Question 44

Your age is an interval variable.

(True/False)

4.8/5

(28)

Question 45

The final grade received in a Literature course (A,B,C,D,or F)is an example of a(n)____________________ variable.

(Essay)

4.8/5

(35)

Question 46

In purchasing a used computer,there are a number of variables to consider.The age of the computer is an example of a(n)____________________ variable.

(Essay)

4.9/5

(37)

Question 47

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-Nighters Narrative} Briefly explain (using percentages)whether staying up all night before this midterm is related to a student doing poorly.

(Essay)

4.8/5

(34)

Question 48

If the relative frequencies in the rows of a cross-classification table are similar,then the two variables shown in the table are not related.

(True/False)

4.8/5

(35)

Question 49

Interval data,such as heights,weights,incomes,and distances,are also referred to as quantitative or numerical data.

(True/False)

4.9/5

(33)

Question 50

A(n)____________________ chart is not able to show frequencies.It can only show relative frequencies.

(Essay)

4.9/5

(33)

Question 51

Which of the following techniques can be used to explore relationships between two nominal variables?

(Multiple Choice)

4.8/5

(36)

Question 52

All calculations are permitted on what type of data?

(Multiple Choice)

4.9/5

(41)

Question 53

Whether or not you are over the age of 21 is a nominal variable.

(True/False)

4.7/5

(35)

Question 54

The Chief of Police conducted a survey of the officers on his squad.An officer's shooting score at target practice is an example of a(n)____________________ variable.

(Essay)

4.8/5

(28)

Question 55

The classification of student class designation (freshman,sophomore,junior,senior)is an example of a(n)

(Multiple Choice)

4.9/5

(33)

Question 56

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 to summarize this data.Which major was the most popular?

(Essay)

4.8/5

(37)

Question 57

If two nominal variables are unrelated,then the patterns exhibited in their corresponding bar charts should be approximately the same.If some relationship exists,then some bar charts will differ from others.

(True/False)

4.8/5

(31)

Question 58

Car buyers were asked to indicate the car dealer they believed offered the best overall service.The four choices were Contour Motors (C),Modern Chrysler (M),Tonneau Auto (T),and Uncanny Chevrolet (U).The following data were obtained: What percentage of car buyers identified Contour Motors as having the best overall service?

(Multiple Choice)

4.8/5

(33)

Question 59

From a pie chart you are able to find the frequency for each category.

(True/False)

4.8/5

(31)

Question 60

Exam 2: Graphical Descriptive Techniques I

The percentage of observations in each combination of the cross-classification table must be equal in order to show two nominal variables are not related.

A pie chart shows the ____________________ of individuals that fall into each category.

Provide one example of ordinal data;one example of nominal data;and one example of interval data.

Your age is an interval variable.

The final grade received in a Literature course (A,B,C,D,or F)is an example of a(n)____________________ variable.

In purchasing a used computer,there are a number of variables to consider.The age of the computer is an example of a(n)____________________ variable.

If the relative frequencies in the rows of a cross-classification table are similar,then the two variables shown in the table are not related.

Interval data,such as heights,weights,incomes,and distances,are also referred to as quantitative or numerical data.

A(n)____________________ chart is not able to show frequencies.It can only show relative frequencies.

Which of the following techniques can be used to explore relationships between two nominal variables?

All calculations are permitted on what type of data?

Whether or not you are over the age of 21 is a nominal variable.

The Chief of Police conducted a survey of the officers on his squad.An officer's shooting score at target practice is an example of a(n)____________________ variable.

The classification of student class designation (freshman,sophomore,junior,senior)is an example of a(n)

If two nominal variables are unrelated,then the patterns exhibited in their corresponding bar charts should be approximately the same.If some relationship exists,then some bar charts will differ from others.

From a pie chart you are able to find the frequency for each category.

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