No, the standard deviation is a measure of the entire population. The sample standard deviation is an unbiased estimator of the population. It is different in notation and is written as 's' as...
Sure it can. But in the survey business, the trick is to select your sample carefully so that they'll be equal, i.e. a sample that is accurately representative of the population.
Standard deviation can only be zero if all the data points in your set are equal. If all data points are equal, there is no deviation. For example, if all the participants in a survey coincidentally...
The variance is the square of the standard deviation.
This question is equivalent to
can s = s^2
The answer is yes, but only in two cases.
If the standard deviation is 1 exactly, then so is the...