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What is the Formula for sampling error related to biostatistics?
Wiki User
∙ 15y ago
I've been looking up the same thing for part of a stats module I do in my nutrition course. This is what I've found - no guarantee it's right but might help a bit. sampling error ∝ 1/√n ∝ means varies directly as so SE = k/√n where k is an unknown constant if we have the size of the sample, n, and the sampling error for one case in a study (which in my question we are given) we can calculate k and get the formula for that study. In my question: for 48 subjects the sample error is 0.3mmol/l. We are asked to find how many subjects would be required to get the sampling error down to 0.1mmol/l. SE = 0.3, n = 48 so 0.3 = k/√48 k = 0.3 * √48 k = 2.078 So in this case, SE = 2.078/√n. K IS NOT ALWAYS GOING TO BE THIS NUMBER!!! You'll need to work it out each time as I dont think it will always be the same. Now work backwards to find n when SE = 0.1mmol/l 0.1 = 2.078/√n √n = 20.78 n = (20.78)2 = 432 So to get a sampling error of 0.1mmol/l we would need 432 subjects. Hope this helps! Jen xx
Wiki User
∙ 15y ago
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Both. But sampling error can be reduced through better design.Both. But sampling error can be reduced through better design.Both. But sampling error can be reduced through better design.Both. But sampling error can be reduced through better design.
Sampling error can be reduced by?
Sampling error can be reduced by
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What causes a Sampling error?
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What are the effects of sample size on sampling error?
The sampling error is inversely proportional to the square root of the sample size.
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What is slovene's formula?
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Sampling error refers to?
Sampling error occurs when the sampling protocol does not produce a representative sample. It may be that the sampling technique over represented a certain portion of the population, causing sample bias in the final study population.
How does a sampling error affect the interpretation of your data?
The greater the sampling error the greater the uncertainty about the results and therefore the more careful you need to be in the interpretation.
What is the committed sampling error?
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