Distribution of marks obtained by 100 student of a class is given below . Find out the median marks
`{:("Marks",0,5,10,15,20,25,30,35,40,45),("Number of Students",4,6,15,5,8,12,28,14,3,5):}`

The frequency distribution of the marks obtained by 100 students in a test carrying 50 marks is given below. Then the mean is {:("Marks ",0-9,10-19,20-29,30-39,40-49),("No. of students "," "8," "15," "20," "45," "12):}

Marks obtained by 100 students of a class are given below. Find out range and coefficient of range of the marks.

Following are the marks obtained by 25 students in economics. Find out the mean marks by using Direct and Short-cut Method. {:("Marks",10,20,30,40,50,60),("Number of Students",5,2,3,8,4,3):}

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):}

Find out median marks from the following data : {:("Marks",0-10,10-20,20-30,30-40,40-50),("Number of Students"," "8," "30," "40," "12," "10):}

The following table gives the marks obtained by some students. Calculate the median marks obtained by the students. {:("Marks",0-5,5-10,10-15,15-20,20-25,25-30,30-35,35-40,40-45),("Number of Students"," "6," "12," "17," "30," "10," "10," "8," "5," "2):}

The marks obtained by 100 students of a school are given below. {:("Marks",0-5,5-10,10-15,15-20,20-25,25-30,30-35,35-40),("No . of Students"," "4," "6," "10," "10," "25," "22," "18," "5):} Find out Q_(1),Q_(3),D_(6)and P_(95) .