Exam 1: Introduction

TABLE 1-2 A Wall Street Journal poll asked 2,150 adults in the U.S.a series of questions to find out their view on the U.S.economy. -Referring to Table 1-2,the possible responses to the question "What do you think is the current number of people unemployed in the country?" are values from a

TABLE 1-2 A Wall Street Journal poll asked 2,150 adults in the U.S.a series of questions to find out their view on the U.S.economy. -Referring to Table 1-2,the possible responses to the question "Are you 1.Currently employed,2.Unemployed but actively looking for job,3.Unemployed and quit looking for job?" are values from a

Researchers suspect that the average number of units earned per semester by college students is rising.A researcher at Calendula College wishes to estimate the number of units earned by students during the spring semester at Calendula.To do so,he randomly selects 100 student transcripts and records the number of units each student earned in the spring term.He found that the average number of semester units completed was 12.96 units per student.Identify the population of interest to the researcher.

Which of the following is most likely a parameter as opposed to a statistic?

TABLE 1-1 The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a DVD player made by the company over the past 12 months are satisfied with their products. -Referring to Table 1-1,the population of interest is

The Human Resources director of a large corporation wishes to develop an employee benefits package and decides to select 500 employees from a list of all (N = 40,000)workers in order to study their preferences for the various components of a potential package.In this study,methods involving the collection,presentation,and characterization of the data are called ________.

TABLE 1-1 The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a DVD player made by the company over the past 12 months are satisfied with their products. -Referring to Table 1-1,the possible responses to the question "Are you happy,indifferent,or unhappy with the performance per dollar spent on the DVD player?" are values from a

A summary measure that is computed to describe a characteristic of an entire population is called

Marital status is an example of an ordinal scaled variable.

The possible responses to the question "How long have you been living at your current residence?" are values from a continuous variable.

TABLE 1-2 A Wall Street Journal poll asked 2,150 adults in the U.S.a series of questions to find out their view on the U.S.economy. -Referring to Table 1-2,the possible responses to the question "How many out of every 10 U.S.voters do you think feel that the U.S.economy is in a good shape?" result in

TABLE 1-2 A Wall Street Journal poll asked 2,150 adults in the U.S.a series of questions to find out their view on the U.S.economy. -Referring to Table 1-2,the population of interest is

In purchasing an automobile,there are a number of variables to consider.The color of the car is an example of a ________ variable.

The Dean of Students conducted a survey on campus.Major area of study is an example of a ________ variable.

The Commissioner of Health in New York State wanted to study malpractice litigation in New York.A sample of 31 thousand medical records was drawn from a population of 2.7 million patients who were discharged during 2010.The collection,presentation,and characterization of the data from patient medical records are examples of ________.

TABLE 1-1 The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a DVD player made by the company over the past 12 months are satisfied with their products. -Referring to Table 1-1,the possible responses to the question "How much time do you use the DVD player every week on the average?" are values from a

A population is the totality of items or things under consideration.

A continuous variable may take on any value within its relevant range even though the measurement device may not be precise enough to record it.

The Commissioner of Health in New York State wanted to study malpractice litigation in New York.A sample of 31 thousand medical records was drawn from a population of 2.7 million patients who were discharged during 2010.The true proportion of malpractice claims filed from the population of 2.7 million patients is a ________.

A professor computed the sample average exam score of 20 students and used it to estimate the average exam score of the 1,500 students taking the exam,which is an example of inferential statistics.