Standard Error


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Calculating the Standard Error		< back		12 of 17		next >

Depending on your situation, you don't have to actually construct a distribution. The value of the SE can be calculated. For our example, with a single mean, the SE of the sampling distribution of
the mean =
S_x equals the SD calculated from your sample. Example #1: Our population has an SD of 1.414. We took samples of 2 from this population. What is the SE of the mean we would expect from these samples? SE = 1.414/(square root of 2) = 1.414/1.414 = 1.00 This is the exact value we found when we took all possible samples of 2 from the population. What about samples of 3 (n = 3)? Do calculation for SE.