Sample vs Population Standard Deviation
For AQA A-Level Statistics, when doing some hypothesis testing, is it expected for me to use the sample standard deviation, or instead the population standard deviation?
In a situation where the data is from a sample not a population, should I just ignore the difference?
In a situation where the data is from a sample not a population, should I just ignore the difference?
(edited 11 months ago)
Original post by uhus
For AQA A-Level Statistics, when doing some hypothesis testing, is it expected for me to use the sample standard deviation, or instead the population standard deviation?
In a situation where the data is from a sample not a population, should I just ignore the difference?
In a situation where the data is from a sample not a population, should I just ignore the difference?
The usual hypothesis test is something like - is the sample mean different from the population mean, so you generally need the sample standard deviation to interpret/scale the difference. Otherwise the number of samples wouldnt really enter the calculation/test.
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