Question

Which describes the standard deviation?

a form of measurement of the average difference between sample values and the sample mean

the confidence level that a sample mean accurately represents a population mean

the value for which half of the sample elements are no bigger, and half are no smaller

the interval around the sample mean that you expect to contain the population mean

Answer 1

As we know that standard deviation is a measure of dispersion which is used to measure the average dispersion ( or the distance or difference) between sample values and sample mean which can be represented by the formula below,

For sample values and sample mean the sample standard deviation be,

So here we can say,

Among the statements given, the statement which describes standard deviation be,

a form of measurement of the average difference between sample values and the sample mean

Hence the answer..................

Thank you...............