Qualitative and Quantitative Measurement - Probability Sampling - How Large Should a Sample Be?
3 important questions on Qualitative and Quantitative Measurement - Probability Sampling - How Large Should a Sample Be?
What are two ways in which we ca approach the question of sample size?
- Making assumptions about the population and use statistical equations about random sampling processes.
- A rule of thumb: a conventional or commonly accepted amount.
What are two principles of sample sizes?
- The smaller the population, the bigger the sampling ratio has to be for an accurate sample.
- Small increases in sample size can produce huge gains in accuracy for small samples.
On which 3 things does you decision about the best sample size depends?
- The degree of accuracy required.
- The degree of variability or diversity in the population.
- The number of different variables examined simultaneously in data analysis.
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