1. EASY

Find the mean absolute deviation:
4,7,4,2,6,8,5,2,7,4

 
2. MEDIUM

The mean of a set of 5 numbers is 20. The absolute differences of the mean and each number are 5,6,2,9,3. What is the mean absolute deviation?

 
3. HARD

What is the percent deviation from the mean in this list:
264,623,163,177,285,163,918,427,824,666

  1. 0%
  2. 62.3%
  3. 26.3%
  4. 32.3%
  5. 54.4%
 
4. HARD

Find the mean absolute deviation:
45,26,35,267,32,45,72,34,54

  1. 45.21
  2. 26.16
  3. 31.61
  4. 65.33
  5. 27.43
 
5. HARD

Find the mean absolute deviation:
62,36,21,78,34,77,49,81,37,69