During a Cold Winter, the Temperature Stayed Below Zero for Ten

question 93

Multiple Choice

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.

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Referring to something that cannot be predicted or foreseen.

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