Question

can someone help me understand the different parts of Mean Absolute Deviation???

Answer 1

\[MAD = \frac{ \Sigma |x - \overline{x}| }{ N }\]

Answer 2

what does the |x - \(\overline{x}\)| mean? N? \(\overline{x}\)???

Answer 3

\(\Sigma\)?

Answer 4

I know what they mean somewhat

Answer 5

@dan815

Answer 6

this may help you a little, im not sure though. it heled me http://www.mathsisfun.com/data/mean-deviation.html

Answer 7

http://www.glencoe.com/sites/pdfs/impact_math/ls9_c1_mean_absolute_deviation.pdf here this is better

Answer 8

basically, just find the mean of the data given, then you find the range from each number in the set to the mean.. after that, find the mean of those new numbers

Answer 9

ah that helps. i am getting an example set and seeing if I got it

Answer 10

alright , feel free to ask any questions that you have. i can try more to help you understand, if needed that is

Answer 11

:)

Answer 12

So is the formula

\(MAD = \dfrac{ \Sigma |x - \overline{x}| }{ N }\)

or

\(MAD = \dfrac{ \Sigma |x - \mu | }{ N }\)

Answer 13

ive usually seen it as the first way

Answer 14

same

Answer 15

here ill just give you a problem to see if you can do mean absolute deviation ok? itll be VERY simple

Answer 16

i am guessing they are the same :)

Answer 17

they are im sure

Answer 18

oooh and \(\sigma\) is standard deviation

Answer 19

yes

Answer 20

used in

\(\sigma=\sqrt{\Sigma \dfrac{(x-\overline{x})^2}{N}}\)