Question

the mean of 13 observation of a data is 19.if two observation are mistaken to be 14 instead of 11 and 17 then find the correct mean​

Answer 1

Step-by-step explanation:

The mean of 10 observations = 15.3

Then sum of the 10 observations = 10 × 15.3 = 153

If observation 6 and 9 are replaced by 8 and 14 respectively,

then the new sum of 10 observations = 153 - (6+9) + 8 + 14

= 153 - 15 + 22

= 175 - 15

= 160

So, the new mean of the 10 observations = 160/10

= 16  Answer

Read more on Brainly.in - https://brainly.in/question/702582#readmore