What is the mean absolute deviation of Sherwin's homework scores? HELP

Explanation:

First we need to find the mean.

Add up the values to get 20+13+3 = 33+3 = 36

Then divide that sum by 3 because we're dealing with three values

We get 36/3 = 12.

The mean is 12.

From here we subtract the mean (12) from each data value of the set {20,13,3}

So we get these differences

Here's where the term "absolute" comes in. More specifically, we'll use absolute value. This is to ensure we don't get a negative value when we subtract. So whatever results above are negative, we just flip to the positive version when we apply absolute value.

The set of results we got were {8, 1, 9}

Let's compute the mean of this new set

Add up the values: 8+1+9 = 9+9 = 18

Divide by three:  18/3 = 6

The mean absolute deviation is 6.

a. turk and mcalister

b. howard, mission, and market

c. yes. since streets end some do not cross yet are not parallel to others. example: mcalister and 5th

step-by-step explanation:

parallel lines are lines which do not intersect ever and look a lot like railroad tracks. turk, mcalister and golden gate are examples of these.

intersect are streets which cross each other and a car on one can reach the other. howard, mission, and market intersect with 6th.

skew lines are lines which neither intersect nor are parallel. these lines exist here because some streets end and never intersect another like mcalister and 5th.