Caculate mode of the following data :
`{:("Marks",0-5,5-10,10-20,20-40,40-60,60-80,80-90,90-100),("Number of Students"," "5," "7," "9," "25" "," "30," "24," "8," "6):}`

Obtain the mean , median and mode of the following data : {:("Marks",0-10,10-20,20-30,30-40,40-50,50-60,60-70,70-80),("Number of Students"," "5," "7," "15," "25," "20," "15," "8," "5):}

Caculate the median and mode from the following data : {:("Marks",0-10,10-20,20-30,30-40,40-50,50-60,60-70,70-80),("Number of Students"," "2," "18," "30," "45," "35," "20," "6," "3):}

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 mode from the following data : {:("Class Interval",30-40,40-50,50-60,60-70,70-80,80-90,90-100),("Frequency"," "3," "4," "6," "10," "6," "4," "3):}

Caculate mode of the following distribution : {:("Marks",10-19,20-29,30-39,40-49,50-59,60-69,70-79,80-89,90-99),("Number of Students"," "29," "87," "181," "247," "263," "133," "40," "9," "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):}

Locate the median graphically from the following data : {:("Marks",0-10,10-20,20-30,30-40,40-50),("Number of Students"," "10," " 20," " 30," " 20," " 10):}

Caculate the mode from the following data : {:("Wages (Rs.)",0-5,5-10,10-15,15-20,20-25,25-30,30-35),("Number of Workers"," "3," "7," "15," "30," "20," "10," "5):}

Find the missing frequency in the following distribution if N=100 and M=30. {:("Marks",0-10,10-20,20-30,30-40,40-50,50-60),("Number of Students"," "10," "?," "25," "30," "?," "10):}

Find the mean for the following data. {:("Marks obtained",10-20,20-30,30-40,40-50,50-60,60-70),("Number of students",8,6,12,5,2,7):}