The standard deviation is a measure of a collection of values' variance or dispersion. The correct option is C.
What is a standard deviation?
The standard deviation is a measure of a collection of values' variance or dispersion. A low standard deviation implies that the values are close to the set's mean, whereas a high standard deviation shows that the values are spread out over a larger range.
A statistic's standard error (SE) (typically an estimate of a parameter) is the standard deviation of its sample distribution.
The standard error of the means is calculated by dividing the standard deviation by the square root of the sample size.
SE = δ/√n
This formula also computes the sample means' standard deviation.
Hence, the correct option is C.
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