Question

find mean of 34,54,65,76,87,67,23,53,90,10,569,

Answer 1

mean=sum of all numbers/ total number of numbers
         =34+54+65+76+87+67+23+53+90+10+569/11
         =1028/11
         ≈93.4545

Answer 2

Mean =sum of observations÷No.of observations
=34+54+65+76+87+67+23+53+90+10+569/11
=1128÷11
=102.54