Weight of 15 persons is as follows: {:("Weight(kg)",20,28,34,39,42,50,53,54,59,64,72,74,74,78,79):} Find out mean weight, using Direct Method as well as Short-cut Method.

Weight of 15 persons is as follows: {:("Weight(kg)",20,28,34,39,42,50

1.	Weight of 15 persons is as follows: {:("Weight(kg)",20,28,34,39,42,50,53,54,59,64,72,74,74,78,79):} Find out mean weight, using Direct Method as well as Short-cut Method.
Answer» ANSWER :WEIGHTED MEAN = 54.67 KG