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how do you calculate minimum sample size. The significance level represents how sure you want to be that your results are not due to. So we will need to sample at least 186 rounded up randomly selected households.
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Statistical tests are only useful when they have enough power to detect an effect if one actually. Then you correct it if you know your population. If you do not know your proportion p it is quite common to take 05 as a value for p.
The equation for calculating sample size is shown below.
This can be done using an online sample size calculator or with paper and pencil. Next determine the sample proportion which. If you do not know your proportion p it is quite common to take 05 as a value for p. One computes the t-statistic of the sample maximum and minimum subtracts sample mean and divides by the sample standard deviation and if they are unusually large for the sample size as per the three sigma rule and table therein or more precisely a Students t-distribution then the kurtosis of the sample distribution deviates significantly from that of the normal distribution.
