Calculate arithmetic mean of the following frequency distribution: {:("Class","less than 10",10-20,20-30,30-40,40-50,50-60,"more than 60"),("Frequency",""5," "12," "18," "22," "6," "4,""3):}

Calculate arithmetic mean of the following frequency distribution: {:

1.	Calculate arithmetic mean of the following frequency distribution: {:("Class","less than 10",10-20,20-30,30-40,40-50,50-60,"more than 60"),("Frequency",""5," "12," "18," "22," "6," "4,""3):}
Answer» ANSWER :ARITHMETIC MEAN = 30. 14