Exam 1: Defining and Collecting Data

True or False: The level of satisfaction ("Very unsatisfied," "Fairly unsatisfied," "Fairly satisfied," and "Very satisfied")in a class is an example of a categorical variable.

True or False: Coverage error can become an ethical issue if a particular group is intentionally excluded from the frame.

True or False: Marital status is an example of a numerical variable.

True or False: The only way one can eliminate sampling error is to take the whole population as the sample.

The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a Blu-ray player made by the company over the past 12 months are satisfied with their products.Which of the following will be a good frame for drawing a sample?

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 Blu-ray player made by the company over the past 12 months are satisfied with their products. -True or False: The possible responses to the question "How long have you been living at your current residence?" are values from a continuous variable.

The Dean of Students mailed a survey to a total of 400 students.The sample included 100 students randomly selected from each of the freshman,sophomore,junior,and senior classes on campus last term.What sampling method was used?

True or False: The professor of a business statistics class wanted to find out the mean amount of time per week her students spent studying for the class.She divided the students into the left,right and center groups according to the location they sat in the class that day.One of these 3 groups was randomly selected and everyone in the group was asked the mean amount of time per week he/she spent studying for the class.This is an example of a cluster sample.

True or False: The number of defective apples in a single box will be measured on an interval scale.

True or False: If you randomly select a student from the first row of a business statistics class and then every other fifth student thereafter until you get a sample of 20 students,this is an example of a convenience sample.

True or False: The number of defective apples in a single box is an example of a continuous variable.

TABLE 1-2 A Wall Street Journal poll asked 2,150 adults in the United States 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 satisfied are you with the U.S.economy today with 1 = very satisfied,2 = moderately satisfied,3 = neutral,4 = moderately dissatisfied and 5 = very dissatisfied?" are values from a

The personnel director at a large company studied the eating habits of the company's employees.The director noted whether employees brought their own lunches to work,ate at the company cafeteria,or went out to lunch.The goal of the study was to improve the food service at the company cafeteria.This type of data collection would best be considered as

For a population frame containing N = 1,007 individuals,what code number should you assign to the first person on the list in order to use a table of random numbers?

The Dean of Students conducted a survey on campus.Number of credits currently enrolled for is an example of a ________ numerical variable.

True or False: Marital status is an example of an ordinal scaled variable.

To demonstrate a sampling method,the instructor in a class picked the first 5 students sitting in the last row of the class.This is an example of a

An insurance company evaluates many numerical variables about a person before deciding on an appropriate rate for automobile insurance.The distance a person drives in a year is an example of a ________ variable.

The British Airways Internet site provides a questionnaire instrument that can be answered electronically.Which of the 4 methods of data collection is involved when people complete the questionnaire?

TABLE 1-3 The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a Blu-ray player made by the company over the past 12 months are satisfied with their products. -Referring to Table 1-3,if a customer survey questionnaire is included in all the Blu-ray players made and sold by the company over the past 12 months,this method of collecting data will most like suffer from