Question

Can someone explain average deviation

Answer 1

@amistre64

Answer 2

its just another measure of deviation ....

Answer 3

whats deviation

Answer 4

take the average of the differences from the mean; instead of the square of the differences

Answer 5

when things vary ... the deviate (stray from) the normal course of events

Answer 6

say i was spose to get 400 dollars this week; but i only got 350 dollars. thats a 50 dollar deviation from what i was expecting

Answer 7

oh ok thanks

Answer 8

so i add up the numbers then what do i do?

Answer 9

@amistre64

Answer 10

sum (x - mean); this is the usual procedure for the finding variance ... but dont square the difference

then divide by how many values there are

Answer 11

so... how would I do this?

Answer 12

define the mean to start with

Answer 13

the mean is 30

Answer 14

subtract 30 from all the elements of the data set

Answer 15

um so subtract 30 from every number?

Answer 16

yes .... but as i do it i think your book has a more specific definition of "average" deviation.

Answer 17

im confused
so getting negative numbers is ok
and after I subtract 30 I average it out again?

Answer 18

yes ... which just zeros it all out in the end which is not an option. so im thinking they want the "absolute" deviation. same process but drop the negative signs

Answer 19

the "absolute" deviation is about 12.9

Answer 20

looks like that may be the answer

Answer 21

since the negative stuff adds to zero; its the only other possible explanation for what they think they want lol

Answer 22

unless they expect you to find the difference between each value with the rest of the values ... and do an average like that

Answer 23

I got an 80!

Answer 24

lol, yay :)

Answer 25

that is good right? i believe its a B

Answer 26

when i find the difference between a value and the rest of them .... i get 81 differences that equal 1344 entotal; for an average of 16.6 which isnt an option either