Exam 1: Data and Statistics
Exam 1: Data and Statistics85 Questions
Exam 2: Descriptive Statistics: Tabular and Graphical Displays112 Questions
Exam 3: Descriptive Statistics: Numerical Measures139 Questions
Exam 4: Introduction to Probability129 Questions
Exam 5: Discrete Probability Distributions150 Questions
Exam 6: Continuous Probability Distributions144 Questions
Exam 7: Sampling and Sampling Distributions119 Questions
Exam 8: Interval Estimation118 Questions
Exam 9: Hypothesis Tests118 Questions
Exam 10: Inference About Means and Proportions With Two Populations127 Questions
Exam 11: Inferences About Population Variances113 Questions
Exam 12: Tests of Goodness of Fit, Independence and Multiple Proportions76 Questions
Exam 13: Experimental Design and Analysis of Variance125 Questions
Exam 14: Simple Linear Regression103 Questions
Exam 15: Multiple Regression109 Questions
Exam 16: Regression Analysis: Model Building82 Questions
Exam 17: Time Series Analysis and Forecasting80 Questions
Exam 18: Nonparametric Methods83 Questions
Exam 19: Statistical Methods for Quality Control75 Questions
Exam 20: Decision Analysis71 Questions
Exam 21: Sample Survey68 Questions
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Exhibit 1-2
In a sample of 3,200 registered voters, 1,440, or 45%, approve of the way the President is doing his job.
-Refer to Exhibit 1-2. A political pollster states, "Forty five percent of all voters approve of the President." This statement is an example of
(Multiple Choice)
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In an application for a credit card, potential customers are asked for their social security numbers. A social security number is an example of a
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In a post office, the mailboxes are numbered from 1 to 5,000. These numbers represent
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Which of the following is not an example of descriptive statistics?
(Multiple Choice)
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In a data set, the number of observations will always be the same as the number of
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An issue of Fortune Magazine reported that the following companies had the lowest sales per employee among the Fortune 500 companies.
a.How many elements are in the above data set?
b.How many variables are in the above data set?
c.How many observations are in the above data set?
d.Name the scale of measurement for each of the variables.
e.Name the variables and indicate whether they are categorical or quantitative.

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The process of analyzing sample data in order to draw conclusions about the characteristics of a population is called
(Multiple Choice)
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Exhibit 1-1
In a recent study based upon an inspection of 200 homes in Daisy City, 120 were found to violate one or more city codes.
-Refer to Exhibit 1-1. The city manager released a statement that 60% of Daisy City's 3,000 homes are in violation of city codes. The manager's statement is an example of
(Multiple Choice)
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When the data are labels or names used to identify an attribute of the elements and the rank of the data is meaningful, the variable has which scale of measurement?
(Multiple Choice)
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The average age in a sample of 90 students at City College is 20. As a result of this sample, it can be concluded that the average age of all the students at City College
(Multiple Choice)
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A pharmaceutical company is performing clinical trials on a new drug that is intended to relieve symptoms for allergy sufferers. Twelve percent of the 300 clinical trial participants experienced the side effect dry mouth.
a.What is the population being studied?
b.What is the sample being studied?
c.Based on the sample, what percentage of the population do you think would suffer from dry mouth?
(Essay)
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The weight of a ball bearing, measured in milligrams, is an example of
(Multiple Choice)
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The summaries of data, which may be tabular, graphical, or numerical, are referred to as
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Dr. Kurt Thearling, a leading practitioner in the field, defines data mining as "the _________ extraction of _________ information from databases".
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Since a sample is a subset of the population, a percentage that is calculated from the sample data
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Exhibit 1-1
In a recent study based upon an inspection of 200 homes in Daisy City, 120 were found to violate one or more city codes.
-Refer to Exhibit 1-1. The manager's statement that 60% of Daisy City's 3,000 homes are in violation of city codes is
(Multiple Choice)
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After the graduation ceremonies at a university, six graduates were asked whether they were in favor of (identified by 1) or against (identified by 0) abortion. Some information about these graduates is shown below.
a. How many elements are in the data set?
b. How many variables are in the data set?
c. How many observations are in the data set?
d. Name the scale of measurement for each of the above (Sex, Age, Abortion Issue, Class rank).
e. Which of the above (Sex, Age, Abortion Issue, Class rank) are categorical and which are quantitative variables?
f. Are arithmetic operations appropriate for the variable "abortion issue"?

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The collection of all elements of interest in a particular study is
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