Question

What symbol is used to identify the standard error of m?​?

Answer 1

The correct answer is:
`\sigma_M`

Explanation:
σ is a Greek letter, which is called a lowercase sigma. In order to express the standard error of m in an equation, we use σ_M. For example, the formula of the standard error of mean is given as follows:


`\sigma_M = (\sigma)/( √(N) )`

Where, N = sample size
σ = standard deviation