The mean series of individual observation is 12 . If each observation is increased by 1 , then the value of the new mean: a ) increased by 1 b ) decreased by 1 c ) remains same Share with your friends Share 1 Varun.Rawat answered this Let x1, x2, x3, ......., xn be the given observations. Mean of n observations = 12⇒x1 + x2 + x3 + .......+xnn = 12 .....1When each observation is increased by 1, then new mean is,New mean = x1+1 + x2+1 + x3+1 + .......+xn+1nNew mean = x1 + x2 + x3 + .......+xnn + 1 + 1 + ........+1 n timesn⇒New mean = 12 + nn = 12 + 1 = 13So, when each observation is increased by 1, then new mean also increases by 1. 1 View Full Answer Trisha Hali answered this a)it will increase by 1 2
