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Alla [95]
3 years ago
11

A data set consists of the values 2, 6, 3, and 1. If we consider this a population (all the values available), the variance isA.

12
B. 14
C. the square root of 3.5
D. the square root of 14
E. none of the above
Mathematics
1 answer:
Hoochie [10]3 years ago
8 0

Answer: E. none of the above

Step-by-step explanation:

The given data values that represents the population:

2, 6, 3, and 1.

Number of values : n=4

Mean of the data values = \dfrac{\text{Sum of values}}{\text{No. of values}}

\dfrac{2+6+3+1}{4}=\dfrac{12}{4}=3

Sum of the squares of the difference between each values and the mean =

(2-3)^2+(6-3)^2+(3-3)^2+(1-3)^2

=-1^2+3^2+0^2+(-2)^2

=1+9+0+4=14

Now , Variance = (Sum of the squares of the difference between each values and the mean ) ÷ (n)

= (14) ÷ (4)= 3.5

Hence, the  variance is 3.5.  

Therefore , the correct  answer is "E. none of the above".

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