What is the mean and MAD of this data set?
2,3,5,7,8,8,9

MAD means "Mean, Absolute, Deviation" right? If not, can you tell me what it is?

Well we know the mean, is just the average. And to find average, we add everything together and divide it by the amount there is.

So it's the sum of 2,3,5,7,8,8,9 divided by the amount (7):

2 + 3 + 5 + 7 + 8 + 8 + 9 = 42.

Divide by 7:

42 / 7 = 6. The mean is 6.

I think to calculate mean, absolute deviation, you find the mean (6) and calculate the distance between each data point, and the mean:

2 to 6 = 4

3 to 6 = 3

5 to 6 = 1

7 to 6 = 1

8 to 6 = 2

8 to 6 = 2

9 to 6 = 3.

Add them:

4 + 3 + 1 + 1 + 2 + 2 + 3 = 16.

Divide by the amount (7):

16/7 = 2.285.

May have gotten this wrong, because I'm not that good at M.A.D...

312312

step-by-step explanation:

the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.