Question

A school principal wants to know more about the number of students absent each day. He counts the number of students absent each day for one week: {24, 18, 31,

Answer 1

6.27

Explanation:

We are to obtain the standard deviation of the given values :

{24, 18, 31,25, 34}

The standard deviation = √(Σ(x - mean)²/ n)

The mean = (ΣX) /n

Using calculator to save computation time :

The standard deviation, s = 6.27 (2 decimal places)