In: Statistics and Probability
Question 1: Determine whether the given description to an observational study or an experiment.
In a study of 424 children with particular disease, the subjects were monitored with an EEG while asleep.
Does the given description correspond to an observational study or an experiment?
A. The given description corresponds to an experiment.
B. The given description corresponds to an observational study.
C. The given description does not provide enough information to answer this question.
Question 2: Identify the type of sampling used (random, systematic, convenience, stratified, or cluster sampling) in the situation described below.
A man is selected by a marketing company to participate in a paid focus group. The company says that the man was selected because he was randomly chosen from all men in his tax bracket.
Which type of sampling did the marketing company use?
A. Systematic sampling, B. Random Sampling, C. Convenience Sampling, D. Cluster sampling, E. Stratified sampling
Question 3: Identify which type of sampling is used: random, systematic, convenience, stratified, or cluster.
A radio station asks its listeners to call in their opinion regarding the format of the morning show.
Which type of sampling is used?
A. Cluster, B. Stratified, C. Random, D. Systematic, E. Convenience
Question 4: Identify the type of sampling used (random, systematic, convenience, stratified, or cluster sampling) in the situation described below.
A woman experienced a tax credit. The tax department claimed that the woman was audited because everyone in four randomly selected districts was being audited.
Which type of sampling did the tax department use?
A. Cluster sampling
B. Systematic Sampling
C. Convenience Sampling
D. Random Sampling
E. Stratified Sampling