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Earn +20 ptsQ: What is the variance of 4 7 9 9 11?
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The mean is 10 What is the variance of the data set 4 9 9 13?
The variance is 13.5833
What is the variance of 7 4 9 8 2?
7 + 4 + 9 + 8 + 2 = 30 So mean = 30/5 = 6 72 + 42 + 92 + 82 + 22 = 214 So variance = 214/5 - 62 = 42.8 - 36 = 6.8
4d-11 equals 2d plus 7?
4(9)-11=25 2(9)+7=25 d=9
What is the variance of 6 8 1 9 4?
It is 8.24
What is the median of 1 3 4 4 6 7 9 9 11?
six
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