Question

Mention the merits and demerits of arithmetic mean.

Answer 1

Merits of arithmetic mean are:
1. Simplicity.
2. Certainty based on all items.
3. Algebraic treatment.

Demerits of arithmetic mean are:
1. Effects of extreme value mean value may not figure in the series at all.
2. Arithmetic mean can not be computed when class intervals have open ends.