Both Cochran (1963) and Yemane (1967 formula looks similar to determine the sample size when the population size is known.
1. what is the condition to use either of the two formula?
2. Which formula is most accurate to determine sample size?
Hi Abede, Instead of them I suggest using G-Power software which is more accurate.
Sample size determination is the act of choosing the number of observations or replicates to include in a statistical sample. The sample size is an important feature of any empirical study in which the goal is to make inferences about a population from a sample.
Sample size determination is the act of choosing the number of observations or replicates to include in a statistical sample. The sample size is an important feature of any empirical study in which the goal is to make inferences about a population from a sample. The sample size can be determined by various methods, such as statistical power analysis, confidence intervals, margin of error, and effect size. The choice of method depends on the research question, study design, type of data, and other factors.
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