Here are the grades students got in a math exam - 78, 78, 74, 74, 64, 62, 60. A. Calculate the mean
Question: Here are the grades students got in a math exam – 78, 78, 74, 74, 64, 62, 60.
A. Calculate the mean and the standard deviation
B. Three students who got 64, 62, and 60 appealed, and the teacher decided to give each one of them 62. How will this change affect the mean, median, mode, and standard deviation? Explain.
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