बारम्बारता बंटन का समान्तर मध्य ज्ञात कीजिए
`{:(" वर्ग अन्तराल : ",25-35,35-45,45-55,55-65,65-75),(" बारम्बारता :", " "6," "10," "8," "12," "4):}`

Find the missing frequency f for the following data if the mode for the data is 39 : {:("Class ",5-15,15-25,25-35,35-45,45-55,55-65,65-75),("Frequency "," "2," "3," "f," "7," "4," "2," "2):}

Find out median wage rate from the following data - set : {:("Wage Rate (Rs.)",5-15,15-25,25-35,35-45,45-55,55-65),("Number of Workers"," "4," "6," "10," "5," "3," "2):}

50 students of economics , secured the following marks in an examination : {:("Marks",20-25,25-30,30-35,35-40,40-45,45-50,50-55,55-60,60-65,65-70),("Students"," "6," "3," "7," "4," "6," "4," "2," "8," "3," "7):} Caculate median.

The distribution below gives the weights of 30 students of a class. Find the median weight of the students : {:("Weight (in kg) ",40-45,45-50,50-55,55-60,60-65,65-70,70-75),("Number of students "," "2," "3," "8," "6," "6," "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):}

The following table gives the literacy rate (in percentage) of 35 cities . Find the mean literacy rate. {:("Literacy rate (in%) ",45-55,55-65,65-75,75-85,85-95),("Number of cities "," "3," "10," "11," "8," "3):}