Question

Mean deviation from the mean for the ungrouped data \[ 8,\,7,\,15,\,12,\,12,\,60,\,15,\,6,\,65,\,4,\,6,\,18 \] is

• A. \(14.5\)
• B. \(11.16\)
• C. \(12.6\)
• D. \(13.4\)

Hint:

For ungrouped data: \[ \text{Mean Deviation about Mean} = \frac{\sum |x-\bar x|}{n}. \] Always take absolute values before adding deviations; otherwise positive and negative deviations cancel out.

Answer 1

The Correct Option is A