Calculate the mean marks from thefollowing data: {:("Marks",20-25,25-30,30-35,35-40,40-45,45-50,50-55),("No. of Students"," "10," "12," "8," "20," "11," "4," "5):}

Calculate the mean marks from thefollowing data: {:("Marks",20-25,25-

1.	Calculate the mean marks from thefollowing data: {:("Marks",20-25,25-30,30-35,35-40,40-45,45-50,50-55),("No. of Students"," "10," "12," "8," "20," "11," "4," "5):}
Answer» <html><body><p></p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :<img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/TRJ_ECO_XI_C09_S01_031_S01.png" width="80%"/> <br/> `<a href="https://interviewquestions.tuteehub.com/tag/barx-2461082" style="font-weight:bold;" target="_blank" title="Click to know more about BARX">BARX</a> = A+(sumfd)/(sumf)` <br/> `=37.5 + (-140)/70` <br/> `= 37.5 - <a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a> = 35.5` <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> = 35.5.</body></html>