Research: Chapter 10 Supplemental Questions

In interpreting quantitative research results, the representatives of the sample is most closely tied to _______. A. Internal Validity B. External Validity C. Sample Validity D. Research Validity

A. Internal Validity

A researcher has decided to conduct a satisfaction survey among all of the patients who presented to the emergency department over a 2-month period of time. This is an example of ___________. A. Stratified Random Sampling B. Cluster Sampling C. Convenience Sampling D. Purposive Sampling

A. Stratified Random Sampling

Which of the following types of studies would require the largest sample size? A. A study in which the population is homogenous B. A study involving multiple variables C. A study measuring interval-level variabls D. A study using cluster sampling

B. A study involving multiple variables

A researcher who wishes to study the impact of having a child with cystic fibrosis on family functioning contacts the local chapter of the Cystic Fibrosis Foundation for assistance in finding parents to interview. Parents of children with cystic fibrosis in the local chapter are the: A. Target Population B. Accesible Population C. Sample D. Participants

B. Accesible Population

A sample that accurately reflects the characteristics of the population is known as a _________. A. Random Sample B. Purposive Sample C. Representative Sample D. Probability Sample

C. Representative Sample

When is determination of an adequate sample size in qualitative research determined? A. A power analysis indicated the power is 0.70. B. The sample size is large enough to identify differences in groups C. Saturation and redundancy of data are achieved. D. A sample size of 30 is obtained

C. Saturation and redundancy of data are achieved.

A power analysis determined that a sample size of 196 would provide a power of 0.80 with an alpha less than 0.05. The study enrolled 202 subjects. Is the sample size adequate, and why? A. No, because the power achieved with a sample size of 196 is only 0.80 B. No, because the sample size is inadequate to prevent a Type I error. C. Yes, because the sample size was supported by a power analysis. D. Yes, because 202 subjects were included, way more than the minimum of 30.

C. Yes, because the sample size was supported by a power analysis.

In a study of nursing students' attitudes toward caring for patients with hypertension who are noncompliant with their medications, the researcher randomly selected a sample of nursing students from a list of all students enrolled in each of five nursing programs that had been randomly selected from one state. Because the sample was randomly selected, to which population can the findings be generalized? A. Nursing students in the programs that were randomly selected B. Nursing students in the state from which the programs were randomly selected C. Nursing students in the United States D. All nursing students

D. All nursing students

Which of the following would be the strongest method for assigning 50 subjects to treatment and control groups in an experimental study? A. Group Subjects according to attending physician B. List subjects alphabetically, divide the list in half, place the first 25 names in the treatment group and the last 25 in the control group. C. Assign each participant a number, place even-numbered participants in the treatment group and the odd-numbered in the control group. D. Assign each participant a number, place the numbers in a box, and draw numbers from the box, alternating placement in either the treatment group or the control group.

D. Assign each participant a number, place the numbers in a box, and draw numbers from the box, alternating placement in either the treatment group or the control group.

A nurse wishes to explore attitudes of critical care nurses toward family presence during resuscitation. She selected 10 nurses who favored family presence and 10 who did not. This is an example of which sampling method? A. Snowball B. Convenience C. Theoretical D. Purposive

D. Purposive