Question

What is the means-to-MAD ratio of the two data sets, expressed as a decimal?



Data set Mean Mean absolute deviation (MAD)
1 4.3 1
2 4.9 1.2

Answer 1

absolute mean deviation

Answer 2

@dan815 @Michele_Laino

Answer 3

@amistre64

Answer 4

i spose i could look up what MAD is, but i simply dont have enough experience with it to offer much help. what are your thoughts for a solution process?

Answer 5

maybe i need to find the mean

Answer 6

@SolomonZelman

Answer 7

an a to b ratio is written as: a:b

but im not sure if thats just too simple for this or if they question is asking something else

Answer 8

@mathstudent55

Answer 9

i don't think thats what they are asking

Answer 10

i see a MAD/mean setup on the google

Answer 11

Isn't it 6 to 0.1?

Answer 12

looks like it?

Answer 13

http://www.forecastpro.com/Trends/forecasting101August2011.html

MAD/Mean Ratio. The MAD/Mean ratio is an alternative to the MAPE that is better suited to intermittent and low-volume data. [P]ercentage errors cannot be calculated when the actual equals zero and can take on extreme values when dealing with low-volume data. These issues become magnified when you start to average MAPEs over multiple time series. The MAD/Mean ratio tries to overcome this problem by dividing the MAD by the Mean -- essentially rescaling the error to make it comparable across time series of varying scales. The statistic is calculated exactly as the name suggests --it is simply the MAD divided by the Mean.

Answer 14

thats the best i got for this ....

Answer 15

well thanks