Can you answer #\'s 20-40? 20. If a sample is representative, it a. is stratifie

Question

Can you answer #'s 20-40?

20. If a sample is representative, it a. is stratified. b. is restricted to the calculation of parameters only. c. reproduces the characteristics of the population. d. resembles the sampling distribution. 21. Nonprobability samples are useful for: a. generalizing findings to a population. b. pretesting a larger project. e. finding causal relationships. d. nonprobability samples are never useful 22. To select a simple random sample, a researcher needs a. a list of the population and system for selecting cases according to EPSEM. b. a list of the sample and a well developed sampling distribution. c. a sampling distribution and a table of random numbers. d. a parameter and a cluster. 23. For a simple random sample, each case and each combination of cases in the population must a. be representative. b. be included in the sample. c. be contacted by the researcher. d. have an equal probability of being chosen for the sample. 24. The simple random sample requires a. a defined population. b. a complete list of all cases in the population. c. a random selection process. d. All of the above 25. In systematic random sampling, the researcher randomly selects a. the first case and every kth case thereafter. b. cases following any systematic pattern. c. every other case. d. cases according to their scores. 26. A sampling technique that allows you to ensure proportional representativeness in a sample is 5l Page

Explanation / Answer

I will give you only correct answers

20]

c] it reproduce the characteristics of population

21]

c] finding causual relationship

22]

a] a list of population and systemos selecting cases according to EPSEM

23]

d] have an equal probability of being chosen in the sample.

24]

d] All the above

25]

a] the first case and every Kth case therafter

26]

b] stratified sampling

27]

d] the exact composition of population is usually unknown

28]

d] cluster

29]

b] simple random sampling

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