The algebraic sum of the deviation of 20 observations from 30 is 2.Therefor, what is the mean of this observatio?

The algebraic sum of the deviation of 20 observations from 30 is 2.The

1.	The algebraic sum of the deviation of 20 observations from 30 is 2.Therefor, what is the mean of this observatio?
Answer» <html><body><p>tion:Let the 20 deviations be a 1 ,a 2 ,...,a 20 <a href="https://interviewquestions.tuteehub.com/tag/therefore-706901" style="font-weight:bold;" target="_blank" title="Click to know more about THEREFORE">THEREFORE</a> the observations are (<a href="https://interviewquestions.tuteehub.com/tag/30-304807" style="font-weight:bold;" target="_blank" title="Click to know more about 30">30</a>+a 1 ),(30+a 2 ),...,(30+a 20 )Given that sum of the deviations is 2Therefore, a 1 +a 2 +...+a 20 =2 ------(1)Hence, <a href="https://interviewquestions.tuteehub.com/tag/mean-1091459" style="font-weight:bold;" target="_blank" title="Click to know more about MEAN">MEAN</a>= 20(30+a 1 )+(30+a 2 )+...+(30+a 20 ) ⟹mean= 20a 1 +a 2 +...+a 20 +20(30) ⟹mean= 202+20(30) (from (1))⟹mean= 20602 =30.1 mark kr do brainlist</p></body></html>