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?

A random sample of 20 people is classified in the following table according to their ages: What is the mean age of this group of people?

Calculate the mode for the following frequency distribution table : {:("Class interval", "Frequency (F)"),(" "5-15," "6),(" "15-25," "11),(" "25-35," "21),(" "35-45," "23),(" "45-55," "14),(" "55-65," "5),(," "n = 80):}

The following table shows the ages of the patients admitted in a hospital during a year : {:("Age (in years)","Number of patients"),(5-15,6),(15-25,11),(25-35,21),(35-45,23),(45-55,14),(55-65,5):} Find the mode and the mean of the data given above . Copmare and interpret the two measures of central tendency .

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):}

The arithmetic mean of the following data is 25, find the value of k . x_i : 5 15 25 35 45 f_i : 3 k 3 6 2

The arithmetic mean of the following data is 25, find the value of k . x_i : 5 15 25 35 45 f_i : 3 k 3 6 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):}

Calculate mode , given the following data set : {:("Mid - value",15,25,35,45,55,65,75,85),("Frequency",5,8,12,16,28,15,3,2):}