Calculate weighted mean of the following data: {:("Marks(X)",81,76,74,58,70,73),("Weight(W)",2,3,6,7,3,7):}

Calculate weighted mean of the following data: {:("Marks(X)",81,76,74

1.	Calculate weighted mean of the following data: {:("Marks(X)",81,76,74,58,70,73),("Weight(W)",2,3,6,7,3,7):}
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_015_S01.png" width="80%"/> <br/> <a href="https://interviewquestions.tuteehub.com/tag/weighted-1451397" style="font-weight:bold;" target="_blank" title="Click to know more about WEIGHTED">WEIGHTED</a> <a href="https://interviewquestions.tuteehub.com/tag/mean-1091459" style="font-weight:bold;" target="_blank" title="Click to know more about MEAN">MEAN</a>, <br/> `barX_(<a href="https://interviewquestions.tuteehub.com/tag/w-729065" style="font-weight:bold;" target="_blank" title="Click to know more about W">W</a>)=(sumWX)/(sumW)=(1,961)/28=70.04` <br/> Weighted Mean = 70.04 markds.</body></html>