निम्नलिखित आँकड़ो का माध्य ज्ञात कीजिए {:(महिला शिक्षकोंकी संख्या (में% ),15-25,25-35,35-45,45-55...

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):}

The age distribution of 400 persons in a colony having median age 32 is given below: {:("Age (in years) :", 20-25,25-30,30-35,35-40,40-45,45-50),("Frequency :", 110,x,75,55,y,30):} Then, x - y is

A random sample of 20 people is classified in the following table according to their ages : |{:("Age","Frequency"),(15-25," 2"),(25-35," 4"),(35-45," 6"),(45-55," 5"),(55-65," 3"):}| What is the mean age of this group of people?

Sachin made the following runs in different matches: {:("Runs",5-15,15-25,25-35,35-45,45-55),("Frequency"," "10," "12," "17," "19," "22):} Calculate the average mean of the runs by Step-deviation Method.

Calculate the median from the following data: Rent (in Rs.): 15-25 25-35 35-45 45-55 55-65 65-75 75-85 85-95 No. of Houses: 8 10 15 25 40 20 15 7

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):}