Calculate the standard deviation for Stock J based on the in

Calculate the standard deviation for Stock J based on the information given above. Please show work

Solution

First find mean

Mean = ( 19+6+10)/3

=11.67

Variance = ( (11.67-19)² +(11.67-6)² +(11.67-10)²⁾⁾)/3

= 29.56

ST = sqrt ( variance )

=5.44