# Thread: Mean, Mean deviation Question! :)

1. ## Mean, Mean deviation Question! :)

58. Given the data A = {3,7,22,19,7,42,12,83,6,19}, determine:

a) the mean

b) Q2

c) the mean deviation

THANKS

2. Originally Posted by cnmath16
58. Given the data A = {3,7,22,19,7,42,12,83,6,19}, determine:

a) the mean

b) Q2

c) the mean deviation

THANKS
a) Substitute the data into the usual formula.

b) Order the data from smallest to biggest and get the median (which is Q2).

c) Substitute your answer to a) and the data into the usual formula.

3. Quick question.. For finding the mean deviation, I have a set with duplicate numbers. Should I count both 7's as single? Or include them as one number.

So.. Instead of there being 10 numbers in the set, there would be only 8?

4. Originally Posted by cnmath16
Quick question.. For finding the mean deviation, I have a set with duplicate numbers. Should I count both 7's as single? Or include them as one number.

So.. Instead of there being 10 numbers in the set, there would be only 8?
All numbers are included.