### CFA Practice Question

There are 410 practice questions for this study session.

### CFA Practice Question

Ten experts rated a newly developed chocolate chip cookie on a scale of 1 to 50. Their ratings were: 34, 35, 41, 28, 26, 29, 32, 36, 38, and 40. What is the mean absolute deviation?

A. 8.00
B. 4.12
C. 12.67

The mean is 33.9. The mean absolute deviation is the absolute value of the deviation from the mean. (0.1 + 1.1 + 7.1 + 5.9 + 7.9 + 4.9 + 1.9 + 2.1 + 4.1 + 6.1)/10 = 41.2/10 = 4.12

User Comment
sunilcfa How to calculate this on a HP 12C?
mikeing Problem is very time consuming. Is there a quicker way to solve?
kamin add all than div 10
diff add all than div 10 is =mean absolute deviation
julescruis no quick way to do this, this should not take more than 1,5 minutes, in line with exam conditions. Guessing the answer is also a good way
mariam84 how to calculate using BA calculator?
wacarinci you need to know the concept, but there will not be questions on exam that requires this much time to calculate. I have sat for exam before, you will be amazed how little you need your calculator.
linhtran32 i think it would be a bit faster if u group the data