What is the variance of {-4, 19, -3, 8, -10}?
1 Answer
Mar 1, 2016
Explanation:
The variance of a data set is given by average of the squared distances of each data point from the mean.
The mean is
Thus the variance is
#((-4-2)^2+(19-2)^2+(-3-2)^2+(8-2)^2+(-10-2)^2)/5#
#=(36+289+25+36+144)/5=106#
