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 median of the following data: {:("Class Interval",0-10,10-20,20-30,30-40,40-50),(f,6,8,5,4,7):}

Find the variance and standard deviation of the following data : 4,6,10,12,14,18,20

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

Given data shows marks of 32 students in an examination. Mean of the marks will be {:("Class interval",0-10,10-20,20-30,30-40,40-50),("Frequency",12,6,8,4,2):}

Calculate the mean devation from the mean the following data: {:(,"Marks",0-10,10-20,20-30,30-40,40-50),(,"No. of stu.",5,8,15,16,6):}

If the variance of the following frequency distribution , {:("Class",":","10-20","20-30","30-40"),("Frequency",":",2,x,2):} is 50, then x is equal to _____.

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

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):}

Calculate the median from the following data - set : {:("Size",10-15,15-17.5,17.5-20,20-30,30-35,35-40,40-50),("Frequency"," "10," "15," "17," "25," "28," "30," "40):}

Caculate median of the following distribution of data : {:("Class Interval",1-10,11-20,21-30,31-40,41-50),("Frequency"," "4," "12," "20," "9," "5):}