The means and mean absolute deviations of Sidney’s and Phil’s grades are shown in the table below. Which expression represents the ratio of the difference of the two means to Sidney’s mean absolute deviation?
StartFraction 82 over 3.28 EndFraction
StartFraction 4 over 3.28 EndFraction
StartFraction 4 over 0.68 EndFraction
StartFraction 82 over 0.68 EndFraction

the probability is 0

to plot points   for x just start at the origin (middle) and go to the left however many times it say(if the number is a positive) if the number is a negative then go right however many times it says if it is 0 go nowhere

now keep you pencil there and go up however many times it says on y(if it is positive) if it is negative then go down however many times it says. if it says 0 go nowhere.

you have just plotted a point! now when you finish plotting all of them connect them with a ruler

plot each point as (-3, 7), (0,4), (3,1), (8,-4)   in the parenthesis on the left of the comma is x and the right is y.

the first one, all those points on the line just make a strait line.