To calculate sample size first find the population size or number of people taking your study and margin of error which is the amount of error youll allow in your results. This is what you will use to gather data for testing your hypothesis. In our example lets say the researchers have elected to use a confidence interval of 95 percent.
To calculate sample size first find the population size or number of people taking your study and margin of error which is the amount of error youll allow in your results.
Find the sample mean. We should use the standard deviation of the entire population but in many cases we wont know it. For the sample size n. Find the sample mean.