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what is the formula for sample size determination. Here we shed light on some methods and tools for sample size determination. The formula of the sample size for the mean is similar to that of the proportion except for the measure of variability.
N Z 2 W 2. 7 min read How many is enough. Thus if there is no information available to approximate p 1 and p 2 then 05 can be used to generate the most conservative or largest sample sizes.
The values of p 1 and p 2 that maximize the sample size are p 1 p 2 05.
Z 1645 p 05 e 004. 7 min read How many is enough. The formula for the mean employs s2instead of p x q as shown in Equation 7. When the sample input or data is obtained and the sample mean barX is calculated the sample mean obtained is different from the population mean m.