Can variance be a negative number?
I'll answer
Earn 20 gold coins for an accepted answer.20
Earn 20 gold coins for an accepted answer.
40more
40more
Works at the International Union for Conservation of Nature, Lives in Gland, Switzerland.
Because the squared deviations are all positive numbers or zeroes, their smallest possible mean is zero. It can't be negative. This average of the squared deviations is in fact variance. Therefore variance can't be negative.
2023-06-17 09:46:35
评论(499)
Helpful(122)
Helpful
Helpful(2)

Emma Johnson
QuesHub.com delivers expert answers and knowledge to you.
Because the squared deviations are all positive numbers or zeroes, their smallest possible mean is zero. It can't be negative. This average of the squared deviations is in fact variance. Therefore variance can't be negative.