Calculate median of the following data :
`{:("Marks",46-50,41-45,36-40,31-35,36-30,21-25,16-20,11-15),("Number of Students"," "5," "11," "22," "35," " 26," "13," "10," "7):}`

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):}

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 the median from the following series : {:("Age (Years)",55-60,50-55,45-50,40-45,35-40,30-35,25-30,20-25),("Number of Students"," " 7," "13," "10," "15," "30," "33," "28," "14):}

Calculate the mean marks from the following data: {:("Marks",20-25,25-30,30-35,35-40,40-45,45-50,50-55),("No. of Students"," "10," "12," "8," "20," "11," "4," "5):}

Find out median marks from the following data : {:("Marks",0-10,10-20,20-30,30-40,40-50),("Number of Students"," "8," "30," "40," "12," "10):}

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):}

Determine median value of the following series using graphic method : {:("Marks",0-5,5-10,10-15,15-20,20-25,25-30,30-35,35-40),("Number of students"," "4," "6," "10," "10," "22," "25," "18," "5):}

The following table gives the marks obtained by some students. Calculate the median marks obtained by the students. {:("Marks",0-5,5-10,10-15,15-20,20-25,25-30,30-35,35-40,40-45),("Number of Students"," "6," "12," "17," "30," "10," "10," "8," "5," "2):}

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):}