The measure of variation for a numerical data set describes how
the values of a number vary with the single number. This measurement shows the
difference in the properties of a certain number to the rest of the numbers in the
numerical data set.
5 5/6 + 5 4/5 =
5 + 5 = 10
5/6 + 4/5 = 25/30 + 24/30 = 49/30 = 1 19/30
10 + 1 19/30 = 11 19/30 <==
I believe the first one is p^2-3p+7p-21 and the second one is9a^2-3ab-3ab+b
the answer is b)-7 or it could be 5
D. Because the 3 is the rate and the 6 is what was already there.