Exam 1: Data and Statistics

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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

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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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Temperature is an example of

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Which of the following is not an example of descriptive statistics?

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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. 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. 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

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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

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Quantitative data

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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?

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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

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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?

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The weight of a ball bearing, measured in milligrams, is an example of

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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

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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. 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? 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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