Question

The following set of data is given
2; 4; 5; 3; 6; 2; 3
Determine the value of coefficient of variance for the same.
A. 2.25
B. 42.0
C. 1.51
D. 3.57​

Answer 1

Answer:

B. 42.0

Explanation:

The following set of data is given

2; 4; 5; 3; 6; 2; 3

Determine the value of coefficient of variance for the same

Answer 2

Answer:

option A

Explanation:

Step 1 of 3:

Variance is the average of squared difference from mean.

Mean of the given data =

= (2+4+5+3+6+2+3)/7

= (25/7)

= 3.571

Step 2 of 3:

Variance = [(2-3.571)2 + (4-3.571)2 + (5-3.571)2 + (3-3.571)2 + (6-3.571)2 + (2-3.571)2 + (3-3.571)2]/5

= [(-1.571)2 + (0.429)2 + (1.429)2 + (-0.571)2 + (2.429)2 + (-1.571)2 + (-0.571)2 ]/5

= 2.742

This closest matches with Option-A . Thus the variance is 2.25

Step 3 of 3:

Ans is Option-A :- 2.25