3RD ONE. For the data shown in the stem-and-leaf plot, what is the effect on the mean and median of adding the value 20 to the data set? A. The mean is decreased by about 0.1 and the median is decreased by 2. B. The mean is decreased by about 0.1 and the median is decreased by 3. C. The mean is decreased by about 0.15 and the median is decreased by 2. D. The mean is decreased by about 0.15 and the median is decreased by 3.

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3RD ONE. For the data shown in the stem-and-leaf plot, what is the effect on the mean and median of adding the value 20 to the data set? A. The mean is decreased by about 0.1 and the median is decreased by 2. B. The mean is decreased by about 0.1 and the median is decreased by 3. C. The mean is decreased by about 0.15 and the median is decreased by 2. D. The mean is decreased by about 0.15 and the median is decreased by 3.

Mathematics
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Other answers:

A?
do the mean without adding the extra 20 and when you get the answer than do it again with the extra 20 and see the difference and its not A
IDK what the answer is.
its D
how?
When you do the mean without the 20 its 22.56 and when you do it with the extra 20 its 22.41 22.56-22.41=0.15 so it can't be a or b
oh I think I understand
And when you do the mean you get 23 but if you add the extra 20 you get 20 20-23=3
so D
Sorry i'm really horrible at explaining stuff
it's okay
thx
Np

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