Calculate mean from the following data: {:("Marks",10-20,10-30,10-40,10-50,10-60,10-70,10-80,10-90),("Number of Students"," "4," "16," "56," "97," "124," "137," "146," "150):}

Calculate mean from the following data: {:("Marks",10-20,10-30,10-40,

1.	Calculate mean from the following data: {:("Marks",10-20,10-30,10-40,10-50,10-60,10-70,10-80,10-90),("Number of Students"," "4," "16," "56," "97," "124," "137," "146," "150):}
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> :The given data is in cumulative frequency form. It should <a href="https://interviewquestions.tuteehub.com/tag/first-461760" style="font-weight:bold;" target="_blank" title="Click to know more about FIRST">FIRST</a> be converted into simple frequency. <br/> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/TRJ_ECO_XI_C09_S01_022_S01.png" width="80%"/> <br/> Mean, `barX=A+(sum fd')/(sumf)xxC` <br/> `=45+20/150xx 10` <br/> `=45+1.33=46.33` <br/> <a href="https://interviewquestions.tuteehub.com/tag/thus-2307358" style="font-weight:bold;" target="_blank" title="Click to know more about THUS">THUS</a>, 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> = 46.33.</body></html>