Mathematics, 01.11.2019 02:31 prelogical

During a cold winter, the temperature stayed below zero for 10 days (ranging from −20 to −5). the variance of the temperatures of the 10 day period a. must be at least zero b. is negative since all the numbers are negative c. cannot be computed since all the numbers are negative. d. can be either negative or positive.

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During a cold winter, the temperature stayed below zero for 10 days (ranging from −20 to −5). the va...