Which of the following is true regarding qualitative and quantitative research?
A) Quantitative research and qualitative research both develop eligibility criteria before consenting study participants.
B) Quantitative research and qualitative research both use random samples whenever possible, to enhance the ability to predict within a wider population.
C) Quantitative research and qualitative research both determine sample size in the same manner.
D) Quantitative research and qualitative research both prefer a large sample to a small one, because it produces stronger statistical results.
A
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Both types of research consider what types of participants would provide the best information. Qualitative research typically involves non-random sampling. Whereas quantitative research typically requires that the sample size be determined before the study begins and remains fixed, study sample size in qualitative studies is typically not fixed and may change due to changing research needs as the study progresses. Although quantitative studies typically benefit from larger sample sizes, which tend to decrease bias, qualitative studies my benefit from smaller sample sizes depending on study goals.
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