How To Determine Sample Size For Unknown Population Complete Guide

how to determine sample size for unknown population. Therefore the sample size can be calculated using the formula as 10000 196 2 05 1-05 005 2 10000 1 196 2 05 1-05 005 2 Therefore 370 customers will be adequate for deriving meaningful inference. As you are assessing the customers perception your population is unknown.

P standard of deviation. To recall the number of observation in a given sample population is known as sample size. Use the sample size formula Plug in your Z-score standard of deviation and confidence interval into the sample size calculator or use this sample size formula to work it out yourself.

If N100 then the corrected sample size would be 18600285 6526 or 66.

Determine your confidence level. Using the data given in the question figure out the following variables. Usually researchers regard 100 participants as the minimum sample size when the population is large. Determine your confidence level.