In the data set below, what is the mean absolute deviation?
7
8
7
5
7
6
2
If the answer is a decimal, round it to the nearest tenth.
mean absolute deviation (MAD):

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

What is the distance between the points 4,10 and -3,-14 on the coordinate plane

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?