Calculate standard deviation for the following data :
`[{: ( Class Interval (C.I.) , Frequency (f) ) , (10-15,32), (15-20,28),(20-25,20),(25-30,16),(30-35,34),(35-40,10),(40-45,8):}]`

The mean of the following data is {("Class interval",f),(" "10-15,5),(" "15-20,7),(" "20-25,3),(" "25-30,4),(" "30-35,8):}

Draw a histogram for the following data: {:("Class Interval",f),(" "0-5,2),(" "5-10,10),(" "10-15,8),(" "15-20,6),(" "20-25,4):}

Find the median of the following data. {:("Class Interval",f),(" "0-10,12),(" "10-20,13),(" "20-30,25),(" "30-40,20),(" "40-50,10):}

Find the quartile deviation for the following grouped data. {:("Class Interval",f),(" "0-4,1),(" "5-9,3),(" "10-14,2),(" "15-19,4),(" "20-24,5),(" "25-29,3),(" "30-34,2),(" "35-39,4),(" "40-44,3),(" "45-49,3):}

Find the standard deviation for the following data: 10, 20, 30, 40, 50, 60, 70, 80, 90

Find the mean, mode and median for the following data : {:("Class","Frequency"),(0-10," "8),(10-20," "16),(20-30," "36),(30-40," "34),(40-50," "6),("Total"," "100):}

What is the standard deviation of the following data ? {:("Measurement",0-10,10-20,20-30,30-40),("Frequency",1,3,4,2):}

Find the approximate value of mean deviation about the mode of the following data. {:("Class Interval",f),(" "0-10,4),(" "10-20,6),(" "20-30,3),(" "30-40,9),(" "40-50,5):}

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