Question

Please help me.. I will medal and fan!!!


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Answer 1

@kaleb_m95 @welshfella @flower2468

Answer 2

can you work out the mean first

mean = total of the numbers / 5

(5 because there is 5 numbers in the list)

Answer 3

what do you get for the mean?

Answer 4

I did that and got 30

Answer 5

its b http://www.alcula.com/calculators/statistics/mean-absolute-deviation/ type the info in to this website and it will help you find the answer

Answer 6

Ok
now you work out the differences from the mean

30 - 20 = 10
30 - 25 = 5
30 - 30 = 0

can you do the last 2?

Answer 7

what 30-45 and 30-30 ?

Answer 8

yes

Answer 9

30 - 45 and 30 - 30 =

Answer 10

but as its an mean absolute deviation any negative value becomes positive

Answer 11

so 30-45 comes out to 15

Answer 12

30-45 = -15

Answer 13

not negative

Answer 14

okay, then just 15

Answer 15

yes

Answer 16

now what?

Answer 17

do the next one

Answer 18

30 -30

Answer 19

when you have completed the 5 calculations you add them up
dividing this total by then gives the MAD

Answer 20

=

Answer 21

0

Answer 22

ok

Answer 23

* by 5

Answer 24

huh?

Answer 25

10 + 5 + 0 + 0 + 15 = ?

Answer 26

it equals 30

Answer 27

ok now finally divide this by 5 and you have the MAD

Answer 28

30/5 = 6

Answer 29

ok

Answer 30

right

Answer 31

thx!

Answer 32

yw

Answer 33

the MAD gives a measure of the spread of the numbers over the mean.