Question

Consider the following sample data: 6, 12, 20,8, 14, 18, 42, 28. What is the standard deviation?

Answer 1

In this question we're given 8 sample data i.e., 6,12,20,8,14,18,42,28

let the data points be x_i , for all i=1,2,..........,8
the mean of the data be-

Let us denote the Standard Deviation by

   
  

I hope this clarifies your doubt. If you're satisfied with the solution, hit the Like button. For further clarification, comment below. Thank You. :)