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159703 Surgery

Which one of the following statement is true?

AThe standard error of the mean (SEM) is generally larger than the standard detion (SD).
BThe standard error of the mean provides a measure of the spread of observation around the mean
CThe mean and standard detion of random sample will generally be different from the mean and standard detion of the population.
DThe coefficient of variation is derived from the range.
Surgery
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