Mean
Find the mean
24, 16, 32, 25, 25
24.4
15, 17, 23, 19
2.5
What is mean?
average
Add up all the numbers and divide by amount of numbers.
Find the mean
15, 15, 17, 22, 19, 15 (round to the tenths)
17.2
9, 7, 4, 13, 12
2.8
What is absolute value?
How far away a number is from zero
|-4|=4
Find the mean
322, 300, 468, 305
348.75
11, 20, 38, 5, 4
10.72
What does M.A.D stand for?
Mean Absolute Deviation
Find the mean
6.4, 7.2, 8.4, 9.5, 7.1, 12.42 (round to the tenths)
8.5
57, 35, 9, 57, 2, 44
19
What are the steps for solving M.A.D?
1. Find the mean
2. Subtract mean from each number
3. Take the absolute value of each answer
4. Find the new mean
What is the difference between mean and M.A.D?
Mean shows the average of the entire data set. M.A.D shows the average of how far away each number is from the mean.
76.8, 68.7, 37.6, 57.9, 57.1
10.5
What does deviation mean?
How far away a data point is from the mean