10 A ST Sampling Quantitative Flashcards
- Turner randomly assigned 50 men and 50 women smokers who responded to a recruitment notice to a smoking cessation intervention or to a control group.
A Nonprobability or
B Probability
ANSWER: A Nonprobability
The sample was a quota sample; men and women responded to a notice and were not selected at random.
- Solomons studied circadian rhythms in a sample of 45 pregnant women consecutively admitted to a hospital in the first 6 months of 2016 because of severe preeclampsia.
A Nonprobability or
B Probability
ANSWER: A Nonprobability
The sample was a consecutive sample of patients meeting eligibility criteria; they were not selected at random.
- Kane sampled every 25th nurse on a roster of licensed nurses in Florida to study their use of personal digital assistants. The starting number of 12 was selected at random.
A Nonprobability or
B Probability
ANSWER: B Probability
Kane used a systematic sample that was initiated by selecting a random number.
- Casey randomly assigned 152 elders recruited from five nursing homes to a foot massage or a wait-list group to assess effects on levels of depression.
A Nonprobability or
B Probability
ANSWER: A Nonprobability
The sample was a convenience sample from five nursing homes; residents were not selected at random, and the statement does not suggest a “quota” for each nursing home.
- Marshall randomly selected 250 students from a large university to study their use of drugs and alcohol.
A Nonprobability or
B Probability
ANSWER: B Probability
The sample was a simple random sample of students, presumably drawn at random from a student roster.
