100 OUT OF 100
A researcher is studying the effect of hypnosis on pain experienced during dental
procedures. The researcher's study has two groups: those who receive hypnosis during
the procedure and those who receive no hypnosis. If the researcher plans to use a t-test
for the statistical analysis, which would be the best way to measure pain for this study? -
ANSWER-numerical pain scale with a range from 0 to 100
A researcher performs a series of pilot studies to evaluate whether a measurement tool
produces consistent results. This is an evaluation of: - ANSWER-Reliability
A researcher develops a 7-point Likert scale to evaluate feelings of well-being in
patients who are undergoing chemotherapy. The researcher administers this measure
to other, similar patients in several medical centers. This is done in order to: -
ANSWER-improve the test-retest reliability
In a pilot study to help train a group of data collectors who will evaluate children's pain
using a FACES rating scale, the researcher examines the reliability of the scores of
each data collector. This is an example of which type of reliability measure? -
ANSWER-Interrater reliability
A researcher consented 75 subjects, but 15 dropped out of the study while it was still in
progress. What was the sample attrition rate? - ANSWER-20%
A researcher attempted to recruit all 150 of the patients seen in the emergency
department in a three-month period for diverticulitis, but only 120 consented to
participate. What is the sample size? - ANSWER-120
Using a table of random numbers, the sample of 400 subjects was selected from the list
of the license numbers of all registered nurses in the state of Michigan. Each nurse was
sent a letter requesting completion of an online survey on workplace bullying. This is an
example of what type of sampling method? - ANSWER-Simple random sampling
Why are convenience samples used so frequently in nursing research, when a random
sample would allow for greater generalizability? - ANSWER-Nurses are limited to the
populations they serve; many populations are small and difficult to access.
A researcher evaluates scores of a paper and pencil instrument with variables at the
interval level of data using the Cronbach's alpha coefficient statistical procedure. This is
a test of: - ANSWER-internal consistency reliability