Answer:
The answer is option D(10.0)
The MAD value of 10.0, from the same data would reflect the most accurate model
Explanation:
The method of finding the mean absolute deviation(MAD) of data(-5, -10, +15) is stated below:
Step 1
Find the mean of the data set.
That is, find the sum of the data values, and divide the sum by the number of data values.(mean = 0)
Step 2
Find the absolute value(only positive values) of the difference between each data value and the calculated mean in step 1
That is, |data value – mean|
Step 3
Find the sum of the absolute values of the differences.
(5 + 10 + 15)
Step 4
Finally, Divide the sum of the absolute values of the differences by the number of data values.[(5 + 10 + 15)/3 = 10]
