Question

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

Answer 1

Answer: 34

Step-by-step explanation:

$Arithmetic \ mean = \dfrac{Sum \ of \ observations}{No. \ of \ observations}$

Arithmetic mean of 7 observations = Sum of all 7 observations / 7

32 = Sum of all 7 observations / 7

32 × 7 = Sum of all 7 obseravtions

∴ Sum of all 7 observations = 224

If one more observation is added to the data,

Sum of observations becomes = 224 + 48 = 272  and

No. of observations becomes = 8

New mean of the data = 272 / 8 = 34