NARRBEGIN: All-Nighters 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. \[\begin{array} { | l | c | c | } \hline & \begin{array} { c } \text { Did Well on } \\ \text { Midterm } \end{array} & \begin{array} { c } \text { Did Poorly on } \\ \text { Midterm } \end{array} \\ \hline \text { Stayed up all right } & 60 & 140 \\ \text { Did not stay up all night } & 120 & 80 \\ \hline \end{array}\] NARREND -{All-Nighters Narrative} Briefly explain (using percentages) whether staying up all night before this midterm is related to a student doing poorly.

Yes, they are related. Of those staying

Exam 2: Graphical Descriptive Techniques I

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

(Multiple Choice)

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Question 81

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.

(Short Answer)

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Question 82

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 83

NARRBEGIN: Business Graduates Business School Graduates A sample of business school graduates were asked what their major was. The results are shown in the following frequency distribution. Major of Graduates Number of graduates Accounting 58 Finance 42 Manegement 38 Marketing 52 Other 10 NARREND -{Business School Graduates Narrative} If you were only given the frequency bar chart below, would you able to reconstruct the original observations in the data set? $NARRBEGIN: Business Graduates Business School Graduates A sample of business school graduates were asked what their major was. The results are shown in the following frequency distribution. \begin{array} { | l | l |} \hline \text { Major of Graduates } & \text { Number of graduates } \\ \hline \text { Accounting } & 58 \\ \text { Finance } & 42 \\ \text { Manegement } & 38 \\ \text { Marketing } & 52 \\ \text { Other } & 10 \\ \hline \end{array} NARREND -{Business School Graduates Narrative} If you were only given the frequency bar chart below, would you able to reconstruct the original observations in the data set?$

(Essay)

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Question 84

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

(True/False)

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Question 85

You cannot calculate and interpret differences between numbers assigned to nominal data.

(True/False)

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Question 86

A(n) ____________________ distribution lists the categories of a nominal variable and the proportion with which each occurs.

(Short Answer)

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Question 87

NARRBEGIN: All-Nighters 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 Midterm Did Poorly on Midterm Stayed up all right 60 140 Did not stay up all night 120 80 NARREND -{All-Nighters Narrative} Briefly explain (using percentages) whether staying up all night before this midterm is related to a student doing poorly.

(Essay)

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Question 88

NARRBEGIN: Business Graduates Business School Graduates A sample of business school graduates were asked what their major was. The results are shown in the following frequency distribution. Major of Graduates Number of graduates Accounting 58 Finance 42 Manegement 38 Marketing 52 Other 10 NARREND -{Business School Graduates Narrative} How many graduates were surveyed?

(Essay)

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Question 89

Identify the type of data for which each of the following graphs is appropriate. a.Pie chart b.Bar chart

(Short Answer)

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Question 90

For what type of data are frequencies the only calculations that can be done?

(Multiple Choice)

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Question 91

NARRBEGIN: Business Graduates Business School Graduates A sample of business school graduates were asked what their major was. The results are shown in the following frequency distribution. Major of Graduates Number of graduates Accounting 58 Finance 42 Manegement 38 Marketing 52 Other 10 NARREND -Suppose you measure the number of minutes it takes an employee to complete a task, where the maximum allowed time is 5 minutes, and each time is rounded to the nearest minute. Data from 130 employees is summarized below. Construct a frequency bar chart and a pie chart from this data. How long did it take most employees to complete the task? Time (minutes) 1 2 3 4 5 Frequency 15 30 40 25 20

(Essay)

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Question 92

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.

(Short Answer)

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Question 93

Showing 81 - 93 of 93

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.

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.

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

You cannot calculate and interpret differences between numbers assigned to nominal data.

A(n) ____________________ distribution lists the categories of a nominal variable and the proportion with which each occurs.

Identify the type of data for which each of the following graphs is appropriate. a.Pie chart b.Bar chart

For what type of data are frequencies the only calculations that can be done?

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.

What Is Statistics

Graphical Descriptive Techniques II

Numerical Descriptive Techniques

Data Collection and Sampling

Probability

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 Optional

Simple Linear Regression and Correlation

Multiple Regression

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