Question

The graph shows the distribution of hand lengths, in centimeters, of the members of an orchestra. What is the variance of the data? 1 2 4 5

Answer 1

hey where is the graph

Answer 2

Answer: Option.C - Variance is 4.  

Solution:

Concept: “Variance is the measure of minimum and maximum extent of spread out of total data”.

From the figure,

Standard deviation can be estimated as follows;

         100 % ranges from 0 to 24; and the levels are 12.

         Standard deviation =$\frac { (24-0) }{ 12 }$

                                      = 2.

Corresponding Variance = Square of standard deviation = 4

Variance is 4.