Calculate mode of the following sercies:
`{:("Class Interval",10-19,20-29,30-39,40-49,50-59,60-69,70-79),("Frequency"," "10," "12," "18," "30," "16," "6," "8):}`

Calculate mode of the following sercies : {:("Class Interval",0-5,5-10,10-15,15-20,20-25,25-30,30-35),("Frequency"," "1," "2," "10," "4," "10," "9," "2):}

Calculate the mode from the following data : {:("Class Interval",20-24,25-29,30-34,35-39,40-44,45-49,50-54,55-59),("Frequency"," "3," "5," "10," " 20," "12," "6," "3," "1):}

Draw a cumulative frequency curve (ogive) for each of the following distributions : {:("Class interval ", 10-19, 20-29 ,30-39, 40-49, 50-59),("Frequency " ," "23, " " 16, " " 15, " " 20, " " 12):}

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):}

Draw histograms for the following frequency distributions : {:("Class interval ", 30-39, 40-49, 50-59, 60-69, 70-79),("Frequency "," "24, " " 16, " " 09, " " 15, " " 20):}

Find out the arithmetic mean by the Step-deviation Method of the following: {:("Class Interval",0-10,10-20,20-30,30-40,40-50,50-60,60-70,70-80),("Frequency "," "12," "16," "32," "52," "42," "32," "18," "12):}

Calculate mode from the following data : {:("Class Interval",0-10,10-20,20-30,30-40,40-50),("Frequency"," "2," "5," "7," "5," "2):}

Calculate mean , median and mode from the following data : {:("Class Interval",30-40,40-50,50-60,60-70,70-80,80-90),("Frequency"," "18," "37," "45," "27," "15," "8):}