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Calculate median , quartiles , 6th decil...

Calculate median , quartiles , 6th decile and 70 th percentile from the following data :
`{:("Marks (less than)",80,70,60,50,40,30,20,10),("Number of Students",100,90,80,60,32,20,13,5):}`

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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):}

Calculate median of the following series : {:("Wage Rate (Rs.) (less than)",10,20,30,40,50,60,70,80),("Number of Waorkers",15,35,60,84,96,127,198,250):}

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):}

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):}

Compute D3 for the following distribution : {:("Marks",0-10,10-20,20-30,30-40,40-50,50-60,60-70,70-80,),("No.of students",3,10,17,7,6,4,2,1,):}

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):}

Find the mean deviation about the mean for the following data: Marks obtained,10-20,20 - 30,30-40,40-50,50-60,60-70,70-80 Number of students,2,3,8,14,8,3,2

Given the following data , find out median : {:("Age",20-25,25-30,30-35,35-40,40-45,45-50,50-55,55-60),("Number of Students"," "50," "70," "100," "180," "150," "120," "70," "60):}

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