Question

1 )Following are the weights (in kg) of 8 students of a class.
48.5,50,44.5,49.5,50.5,45,51,43.​

Answer 1

Solutions

a) Mean Weight :-

= Sum of all Observations / No. of Observations

= 48.5 + 50 + 44.5 + 48.5 + 50.5 + 45 + 51 + 43 / 8

= 381 / 8

= 47.625

b) If 62 kg is also included

Sum of all Observations

= 48.5 + 50 + 44.5 + 48.5 + 50.5 + 45 + 51 + 43 + 62 = 443

No. of Observations = 9

= 443 / 9

49.2