A researcher studies spending habits of teenagers in strip malls. From what kind of population has the researcher selected her sample?
a. The accessible population
b. The entire population
c. The target population
d. The target sample
ANS: A
An accessible population is the portion of the target population to which the researcher has reasonable access. The sample is obtained from the accessible population by a particular sampling method. The target population is the entire set of individuals or elements who meet the sampling criteria. The sample is selected from the accessible population within the target population, since this is the population from which the researcher can actually select subjects. The sample here is a subset of the accessible population that actually checks into shelters, not the target population of all homeless persons. The entire population is a particular group of people who share one or more characteristics that are the focus of the research.
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A patient's vision is recorded as 20/30 when the Snellen eye chart is used. The nurse interprets these results to indicate that:
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The patient is due to begin treatment with clomiphene (Clomid). During her patient teaching ses-sion, the patient should be instructed to expect which adverse drug effect while she is receiving the medication?
a. Urinary retention b. Menopausal-like hot flashes c. Nervousness or excitability d. Decreased appetite
You are caring for an adult patient who had symptoms of unstable angina during admission to the hospital. The most appropriate nursing diagnosis for the discomfort associated with angina is what?
A) Deficient knowledge about underlying disease and methods for avoiding complications B) Anxiety related to fear of death C) Ineffective cardiopulmonary tissue perfusion secondary to CAD, as evidenced by chest pain D) Noncompliance related to failure to accept necessary lifestyle changes
The difference between the observed score and what exists in reality (true score) is called:
a. homogeneity. b. measurement error. c. split-half reliability. d. standard deviation.