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Liberty University Online Academy BMAL 590 Section 2: Data Collection And Sampling

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Liberty University Online Academy

BMAL 590

Section 2: Data Collection And Sampling.

1)Which method of data collection is involved when a researcher counts and records the number of students wearing backpacks on campus on a given day?

 

2. Which of the following represents a population, as opposed to a sample?

 

3. A study in under way to determine the average height of all 32,000 adult pine trees in a certain national forest. The heights of 500 randomly selected adult pine trees are measured and analyzed. The sample in this study is

 

4. A marketing research firm selects a random sample of adults and asks them a list of questions regarding their beverage preferences. What type of data collection is involved here?

 

5. Which of the following statements is true regarding the design of a good survey?

 

6. The difference between a sample mean and the population mean is called

 

7. The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a videocassette recorder over the past 12 months are satisfied with their products. If there are four different brands of videocassette recorders made by the company, the best sampling strategy would be to use a simple random sample.

 

8. When every possible sample with the same number of observations is equally likely to be chosen, the result is called a

 

9. Which of the following types of samples is almost always biased?

 

10. Which of the following is an example of a nonsampling error?

 

11. Which of the following situations lends itself to cluster samples? When it is difficult to develop a complete list of the population members. When the population members are widely disbursed.

When selecting and collecting data from a simple random sample is too costly.

 

12. Which of the following causes sampling error?

 

13. Which of the following describes selection bias?

 

14. The simplicity of                                   questions are a key trait of good questionnaire design.

 

15. The                 sample involves dividing the population into groups, then randomly selecting some of the groups and taking either a sample or a census of their members.
16. Which of the following statements is true regarding the design of a good survey?

 

17. Which method of data collection is involved when a researcher counts and records the number of students wearing backpacks on campus on a given day?

 

18. The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a videocassette recorder over the past 12 months are satisfied with their products. If there are four different brands of videocassette recorders made by the company, the best sampling strategy would be to use a

 

19. Which of the following types of samples is almost always biased?

 

20.                          is an expected error based only on the observations limited to a sample taken from a population.