How To Find Sample Size From Margin Of Error Complete Guide

how to find sample size from margin of error. You can calculate the sample size in five simple steps. To do this use the confidence interval equation above but set the term to the right of the sign equal to the margin of error and solve for the resulting equation for sample size n.

Sample Size For A Confidence Interval For A Proportion In Statcrunch Confidence Interval Statistics Help Graphing from www.pinterest.com

In this formula z is the z value obtained from the Z distribution table. Multiply the sample proportion by Divide the result by n. Due to the location of this number in the above formula the larger the sample size that we use the smaller the margin of error will be.

N 25761752 875842 767096 which we will round up to 77.

Margin of error a number that represents the uncertainty of the point estimate. Choose the required confidence level from the dropdown menu Input the margin of error Input the proportion of the total population. Confidence Interval point estimate - margin of error. Multiply the sample proportion by Divide the result by n.