Following table gives marks in Statistics of the students of a class. Find out mean marks. {:("Mid-value",5,10,15,20,25,30,35,40),("Number of Students",5,7,9,10,8,6,3,2):}

Following table gives marks in Statistics of the students of a class.

1.	Following table gives marks in Statistics of the students of a class. Find out mean marks. {:("Mid-value",5,10,15,20,25,30,35,40),("Number of Students",5,7,9,10,8,6,3,2):}
Answer» <html><body><p></p>Solution :In this series, mid-values are already given. The calculation of arithmetic <a href="https://interviewquestions.tuteehub.com/tag/mean-1091459" style="font-weight:bold;" target="_blank" title="Click to know more about MEAN">MEAN</a> involves thesameprocedure as in the case of exclusive series. <br/> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/TRJ_ECO_XI_C09_S01_011_S01.png" width="80%"/> <br/>`barX= (sumfm)/(sumf)=995/50=<a href="https://interviewquestions.tuteehub.com/tag/19-280618" style="font-weight:bold;" target="_blank" title="Click to know more about 19">19</a>.9` <br/> Mean <a href="https://interviewquestions.tuteehub.com/tag/marks-1088184" style="font-weight:bold;" target="_blank" title="Click to know more about MARKS">MARKS</a> = 19.</body></html>