Question

The weight of 12 students in a class is given below. 42.8 ,50,.44.5,49.3, 50.4,51,42,46.8,48.4,52,50.8 .Find the average mean&range

Answer 1

mean = sum of all the observation / total no. of obeservation
=(42.8 + 50 + 44.5 + 49.3 + 50.4 + 51 + 46.8 + 48.4 + 52 + 50.8 ) ÷ 12
= 486 ÷ 12
= 40.5



range=highest observation- lowest observation
=52 - 42.8
=9.2