Calculate Minimum Sample Size With Margin Of Error. So the formula in order to determine the sample size is n z σMOE 2. For our formula we have a standard deviation of 17 a multiplier of 2576 from the powerpoint and a margin of error of 5.
Sample Size Calculator Determine The Number Of Respondents Needed In A Survey To Have Statistically Significant Results Or Calculat Calculator Sample Surveys from www.pinterest.com
For the benchmarking study a minimum customer survey sample of 400 is required. Now that youve got answers for steps 1 4 youre ready to calculate the sample size you need. This video shows how to find a desired sample size for a proportion.
This gives us the formula n zα2 σ E 2.
A client can increase the benchmarking study customer survey sample size or for the tracking study a client can use the customer survey sample size they prefer. Finding the Smallest Sample Size Needed for a Given Margin of Error and Confidence. For the benchmarking study a minimum customer survey sample of 400 is required. The MOE is the margin of error that is desired.
