RESEARCH METHODS THINKING CRITICALLY WITH PSYCHOLOGICAL SCIENCE
THE SCIENTIFIC METHOD AND DESCRIPTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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10-20
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100-500
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1000-1500
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100, 000-500, 000
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Detailed explanation-1: -A good maximum sample size is usually around 10% of the population, as long as this does not exceed 1000. For example, in a population of 5000, 10% would be 500. In a population of 200, 000, 10% would be 20, 000. This exceeds 1000, so in this case the maximum would be 1000.
Detailed explanation-2: -Sampling ratio (sample size to population size): Generally speaking, the smaller the population, the larger the sampling ratio needed. For populations under 1, 000, a minimum ratio of 30 percent (300 individuals) is advisable to ensure representativeness of the sample.
Detailed explanation-3: -A sample size of 30 often increases the confidence interval of your population data set enough to warrant assertions against your findings.4 The higher your sample size, the more likely the sample will be representative of your population set.