Question: All students in Class A got the same score in a test. The test scores of Class B ranged from 80 to 100. Which of

All students in Class A got the same score in a test. The test scores of Class B ranged from 80 to 100. Which of the following statements is true? Question 3 options: Class A is smarter than Class B The variance of Class A is larger than the variance of Class B The SD of Class A is smaller than the SD of Class B The mean of Class A is smaller than the mean of Class B

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