 |
1 | |
Which of the following is an example of probability sampling? |
|
| | A) | Convenience sampling |
| | B) | Cluster sampling |
| | C) | Judgment sampling |
| | D) | Quota sampling |
| | E) | Snowball sampling |
|
2 | |
John is enrolled in a class that has a total of 40 students in it. A researcher wants to conduct a survey in this class using a simple random sample of 10. What is John's probability of selection for this sample? |
|
| | A) | 40% |
| | B) | 10% |
| | C) | 25% |
| | D) | 2.5% |
| | E) | 4% |
|
3 | |
If a sample size of 200 is desired from a defined target population of 10,000, the skip interval for the sample would be: |
|
| | A) | 20 |
| | B) | 200 |
| | C) | 50 |
| | D) | 500 |
| | E) | 5 |
|
4 | |
Under which of the following conditions is it not advisable to use systematic random sampling? |
|
| | A) | When the natural order of population list is unrelated to the characteristic being studied |
| | B) | When there are hidden patterns in the data that the researcher is interested in identifying |
| | C) | When the researcher is interested in drawing a sample that is random |
| | D) | When the researcher knows the exact number of sampling units that make up the defined target population |
| | E) | When the researcher doesn't want to assign any special codes to the sampling units before drawing the sample |
|
5 | |
A company divides its target population into five strata of following sizes: 10m, 15m, 15m, 20m, and 40m. If the company wants to use proportionate stratified sampling, how many sampling units should it draw from the five strata for a total sample size of 300? |
|
| | A) | 60, 60, 60, 60, 60 |
| | B) | 30, 40, 40, 60, 130 |
| | C) | 30, 45, 45, 60, 120 |
| | D) | 120, 60, 45, 45, 30 |
| | E) | 130, 60, 40, 40, 30 |
|
6 | |
All of the following are true about stratified sampling, EXCEPT: |
|
| | A) | Using this method, one can make comparisons between strata |
| | B) | Stratification should be based on the target population's characteristics of interest |
| | C) | The larger the number of strata, the less precise the results |
| | D) | Inclusion of irrelevant strata doesn't add to the meaningfulness of results |
| | E) | Determining the basis of stratification is often a difficult task encountered in stratified sampling |
|
7 | |
Generally speaking, which of the following sampling methods is likely to have the most generalizable results? |
|
| | A) | judgment sampling |
| | B) | quota sampling |
| | C) | cluster sampling |
| | D) | snowball sampling |
| | E) | convenience sampling |
|
8 | |
Instead of surveying customers, a company instead surveys its salespeople because it believes that salespeople know what their customers want and can represent their needs and wants well. This method of sampling is most likely: |
|
| | A) | judgment sampling |
| | B) | quota sampling |
| | C) | stratified sampling |
| | D) | cluster sampling |
| | E) | convenience sampling |
|
9 | |
All of the following factors are likely to indicate a need for doing probability sampling, EXCEPT: |
|
| | A) | The results of the survey should be generalizable to the target population |
| | B) | The researcher is interested in gaining interesting insights about the target population |
| | C) | The budget available to do the study is not a major constraint |
| | D) | Time available to do the study is adequate |
| | E) | A high degree of accuracy is desired in the results |
|
10 | |
A researcher wants to study the level of customer satisfaction. She is debating whether she should include people who have never bought her company's products in the past in her survey. She is at which stage of her sampling plan? |
|
| | A) | Identification of sampling plan |
| | B) | Defining the target population |
| | C) | Selecting appropriate sampling method |
| | D) | Creating an operating plan for selecting sampling units |
| | E) | None of the above |
|
11 | |
A researcher is developing a sampling plan. She is at the stage where she is looking into expected response rates and how many subjects she will need to contact in order to get her desired sample size. She is most likely at what stage of the sampling plan stage? |
|
| | A) | Identification of sampling plan |
| | B) | Defining the target population |
| | C) | Selecting appropriate sampling method |
| | D) | Creating an operating plan for selecting sampling units |
| | E) | None of the above |
|
12 | |
In probability sampling, every element of the defined target population has a known, equal probability of being selected for the sample. |
|
| | A) | True |
| | B) | False |
|
13 | |
In cluster sampling, the more homogeneous the cluster, the more precise are the sample estimates. |
|
| | A) | True |
| | B) | False |
|
14 | |
Snowball sampling is also called referral sampling. |
|
| | A) | True |
| | B) | False |
|
15 | |
Before selecting an appropriate sampling method, one should first identify the sampling frame. |
|
| | A) | True |
| | B) | False |