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» SOLUTION : `BARX = A+(sumfd)/(sumf)` `=37.5 + (-140)/70` `= 37.5 - 2 = 35.5` Mean MARKS = 35.5.