Question

mean of 9 observations was found to be 35.Later on,it was detected that an observation 81 was misread as 18.Find the correct mean of the observations.

Answer 1

Answer:

mean = sum of the observations/no. of observations

so, 35= sum of observations/9

sum of observations=9*35=315

now 81 was miss read as 18

so,

315-18+81=378

mean =sum of observations /no. of observations

so,

mean=378/9=42

so new mean is 42

hope it helps you

please mark my answer as brainliest

Answer 2

Answer:

5050

Step-by-step explanation: