Find Quartile deviation of the following table

Quartiles

Find out quartile deviation of the following series:

Find the quartile deviation of the following discrete series. {:(x,7,5,4,8,12,10),(f,2,4,6,10,9,7):}

Find the quartile deviation of the following discrete series. {:(x,8,10,13,16,19,22),(f,4,7,8,3,5,4):}

Find the quartile deviation of the following discrete series. {:(x,3,5,6,8,10,12),(f,7,2,3,4,5,6):}

Find the quartile deviation of the following data: {:(x,f," "x,f),(2,4," "13,2),(3,6," "17,4),(5,8," "19,6),(7,9," "23,6),(11,10," ",):}

Find out quartile deviation and the coefficient of quartile deviation of the following data:

Find out quartile deviation from the following distribution .

Find out range and quartile deviation from the following marks obtained by 10 students . 90 , 64 , 79 , 33, 85 , 59 , 60 , 70 , 40 , 95