During a cold winter, the temperature stayed below zero for ten days (ranging from -20 to -5). The variance of the temperatures of the ten day period
a.) is negative since all the numbers are negative
b.) must be at least zero
c.) cannot be computed since all the numbers are negative
d.) can be either negative or positive
Answer: B
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.