Find Sample Size Given Standard Deviation And Mean. So its just the basic premise that the more data you have the more of an informed and accurate result you can obtain. Sign equal to the margin of error and solve for the resulting equation for sample size n.
Feb 12 2020 Work through each of the steps to find the standard deviation. N is population size. Mean age 402.
Z is the z score.
Sign equal to the margin of error and solve for the resulting equation for sample size n. Table showing minimum sample sizes for a two-sided test. Calculate the mean of your data set. If it is not given use the standard deviation from a similar study.
