What is the variance for the following population of scores? scores: 5, 2, 5, 4
Solution:
Given the scores 5, 2, 5, 4
Variation is the squared variation of the given values from its mean.
Mean = sum of elements/ total number of elements
Mean μ = (5+2+5+4)/ 4= 4
xᵢ - μ= 1, -2,1,0
V =∑(xᵢ-μ)2/ n
=12 + (-2)2 + 12
= [1+4+1]/4
=6/4
=1.5
Variance =1.5
What is the variance for the following population of scores? scores: 5, 2, 5, 4
Summary:
The variance for the following population of scores: 5, 2, 5, 4 is 1.5.