Multiple choice

Which of these is the average of difference of the values of items from some average of the series?

  1. Rank correlation

  2. Skewness

  3. Standard deviation

  4. Range

  5. Mean deviation

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Mean deviation is the average of difference of the values of items from some average of the series. Such a difference is technically described as deviation. In calculating mean deviation we ignore the minus sign of deviations while taking their total for obtaining the mean deviation.