Find the mean for the following frequency distribution :

Find the mean of the followings frequency distribution :

Find the mean from the following frequency distribution:

Find the mean of the following frequency distribution:

Find the mean of the following frequency distribution:

Find the mean of the following frequency distribution

Find the mean of the following frequency distribution:

Find the mean of the following frequency distribution:

Find the mean of the following frequency distribution : {:("Class ",0-20,20-40,40-60,60-80,80-100),("Frequency "," "15," "18," "21," "29," "17):}

Find the mean from the following frequency distribution of marks at a test in statistics: Marks (x) : 5 10 15 20 25 30 35 40 45 50 No. of students (f) : 15 50 80 76 72 45 39 9 8 6

Find the mean from the following frequency distribution of marks at a test in statistics: Marks (x) : 5 10 15 20 25 30 35 40 45 50 No. of students (f) : 15 50 80 76 72 45 39 9 8 6