Question

arithmetic mean of 7 observations was found to be 32 if one more observation 48 was to be added to the data what would be the new mean of the data

Answer 1

first find the sum of seven observation = 32 × 7 = 224 and then add 48 and whole divide by 8.. so finally new mean = 34 .....☺☺☺

Answer 2

mean= sum of observations/total observations
32= sum/7
224=sum of observations
If 48 is added to the data, then sum will be
224+48= 272
new sum=272
new mean=new sum/total observations
=272/8
=34
New mean=34