Question

1-In order to complete a statistics project, you pass out surveys to the first 25 people...

1-In order to complete a statistics project, you pass out surveys to the first 25 people you find in the CC building.
A) Simple Random Sampling B) Stratified Sampling C) Cluster Sampling D) Systematic Sampling E) Convenience Sampling

2-The FDA chooses 15 hospitals around the country at random. Every doctor in the chosen hospitals is asked to participate in the study.
A) Simple Random Sampling B) Stratified Sampling C) Cluster Sampling D) Systematic Sampling E) Convenience Sampling

3-A tax auditor selects every 1000th income tax return that is received.
A) Simple Random Sampling B) Stratified Sampling C) Cluster Sampling D) Systematic Sampling E) Convenience Sampling

Math   Statistics-And-Probability   
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Answer #1

(1) It is convenience sampling because the sampling is not random and not any specific way is used for sample selection. Researcher sampled only first 25 people, i.e. main focus is on convenience. So, it is convenience sampling, E option

(2) it is cluster sampling because the entire population is divided into sub parts and then the entire sample is selected for sampling. So, correct answer is C is correct

(3) it is systematic sampling because the researcher is selecting every 1000th income tax return. So, a systematic way is used to select the sample. Option D is correct

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