Calculate Minimum Sample Size Needed. So you need to take a random sample of at least 211 college students in order to have a margin of. Necessary Sample Size Z-score2 StdDev 1-StdDev margin of error2 This equation is for an unknown population size or a very large population size.
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A minimum sample size of 200 per segment is considered safe for market segmentation studies eg if you are doing a segmentation study and you are OK with having up to 6 segments then a. Determine the total population size. N z c σ E 2.
Margin of error confidence interval.
Jul 15 2020 To calculate sample size using your margin of error confidence interval you must also know your confidence level and population size. Margin of error confidence interval. So you need to take a random sample of at least 211 college students in order to have a margin of. Necessary Sample Size Z-score2 StdDev 1-StdDev margin of error2 This equation is for an unknown population size or a very large population size.
