The list below shows the number of text messages that five students sent from their phone during a school day.
34, 12, 49, 8, 2
Find the mean absolute deviation of the list of numbers.
The list below shows the number of text messages that five students sent from their phone during a school day.
34, 12, 49, 8, 2
Find the mean absolute deviation of the list of numbers.
21
72
14.8
16.4
To find the mean absolute deviation (MAD) of a list of numbers, follow these steps:
1. Calculate the mean (average) of the list of numbers:
Mean = (34 + 12 + 49 + 8 + 2) / 5 = 21
2. Calculate the absolute deviation of each number from the mean:
|34 - 21| = 13
|12 - 21| = 9
|49 - 21| = 28
|8 - 21| = 13
|2 - 21| = 19
3. Calculate the mean of the absolute deviations:
MAD = (13 + 9 + 28 + 13 + 19) / 5 = 16.4
So, the mean absolute deviation of the list of numbers is 16.4.