Exam 3: Surveys and Sampling

Two of the questions asked in the survey of employees are shown below. • Since exercise is so important to good health, would you be willing to participate in organized walks during lunch hour? • Would you attend a "low fat cooking" demonstration? a. Are these questions valid (appropriately worded)? Explain. b. Which question is more neutral? Explain.

Consider the following to answer the question(s) below. The administration of a large university is interested in learning about the types of wellness programs that would interest its employees. To do this, they plan to survey a sample of their employees. -Suppose that there are five categories of employees (administration, faculty, professional staff, clerical, and maintenance) and the university decides to randomly select ten individuals from each category. This sampling plan is called

Consider the following to answer the question(s) below. ASW, a regional shoe chain, has recently launched an online store. Sales via the Internet have been sluggish compared to their brick and mortar stores, and management suspects that its regular customers have concerns regarding the security of online transactions. To determine if this is the case, they plan to survey a sample of their regular customers. -Suppose that ASW's regular customers belong to a rewards program and have a customer rewards ID number. ASW decides to randomly select 100 numbers. This sampling plan is called

One member of the management team at ASW suggests that their survey could be conducted online. Customers logging on to the online store would be asked to take a few minutes to complete the survey and would be offered a coupon as incentive to participate. Explain how this approach might be biased.

An Internet service provider has the capability of tracking the time that each of its customers spends connected to the Internet during a month. These data would constitute

A professor hands out survey forms to the students in her own classes. If the population is all students attending the university, this is an example of

The administration of a large university is interested in learning about the types of wellness programs that would interest its employees. To do this, they plan to survey a random sample of employees. Under consideration are several plans for selecting the sample. Name the sampling strategy for each. a. There are five categories of employees (administration, faculty, professional staff, clerical, and maintenance). Randomly select ten individuals from each category. b. Each employee has an ID number. Randomly select 50 numbers. c. Randomly select a school within the university (e.g., Business School) and survey all of the individuals (administration, faculty, professional staff, clerical and maintenance) who work in that school. d. The HR Department has an alphabetized list of newly hired employees (hired within the last five years). After starting the process by randomly selecting an employee from the list, then every 5th name is chosen to be included in the sample.

Consider the following to answer the question(s) below. ASW, a regional shoe chain, has recently launched an online store. Sales via the Internet have been sluggish compared to their brick and mortar stores, and management suspects that its regular customers have concerns regarding the security of online transactions. To determine if this is the case, they plan to survey a sample of their regular customers. -Suppose that ASW has an alphabetized list of regular customers who belong to their rewards program. After randomly selecting a customer on the list, every 25th customer from that point on is chosen to be in the sample. This sampling plan is called

One member of the management team at ASW suggests that their survey could be conducted online. Customers logging on to the online store would be asked to take a few minutes to complete the survey and would be offered a coupon as incentive to participate. Which of the following statements is true?

In the ASW study described above, a. Define the target population. b. Define the parameter. c. What is the sampling frame? d. How might the results be biased?

In developing and conducting a survey, what is the purpose of the pilot test phase?

Which of the following is the parameter of interest in the ASW study?

An attribute of a sample is called a

Consider the following to answer the question(s) below. The administration of a large university is interested in learning about the types of wellness programs that would interest its employees. To do this, they plan to survey a sample of their employees. -Suppose that the university randomly selects a school (e.g., the Business School) and surveys all of the individuals (administration, faculty, professional staff, clerical, and maintenance) who work in that school. This sampling plan is called

Two of the questions asked in the survey of customers are shown below. • Given the prevalence of identity theft, are you reluctant to provide credit card information online? • Are you confident that any information you provide online is secure? a. Are these questions valid (appropriately worded)? Explain. b. Which question is more neutral? Explain.

Which of the following survey questions is leading?

Which of the following statements about this study is false?

In conducting a personal interview, the interviewer is allowed to arbitrarily decide who should be interviewed. Which of the following statements is true?

A simple random sample experiment is repeated four times choosing the same sample size each time. Which of the following statements can be made about the different outcomes?

A consumer research group is interested in how older drivers view hybrid cars. Specifically, they wish to assess the percentage of drivers in Canada, 50 years of age or older who intend to purchase a hybrid in the next two years. Suppose that a list of CARP (Canadian Association of Retired Persons) members is used as the sampling frame. Based on a systematic sample, they estimated the percentage to be 17%. a. Define the target population. b. Define the parameter. c. What is the statistic? d. How might the results be biased?