6389-1212-2828=?

8282 + 2828 = ? xx 40

Calculate mean deviation from the median of the following data: Class interval: 0-66-1212-1818-2424-30 Frequency 45362

Find the mean deviation about the median of the following frequency distribution: Class: 0 - 6,6-12,12-18,18-24,24-30 Frequency: 8,10,12,9,5

A company markets a particular brand of electrical fans.The life of fans (in months) is give the following distribution.Determine the modal class and median class.Age(in months) 0-66-1212-1818-2424-3030-3636-4242-48 No.of fans 6.1520252540321820

Consider the following frequency distribution : {:("Class :",0-6,6-12,12-18,18-24,24-30),("Frequency : ",a,b,12,9,5):} If mean = (309)/(22) and median = 14, then the value (a-b)^(2) is equal to __________ .

Construct 'ogive' for the following distribution : {:("C.I.",0-3,3-6,6-9,9-12,12-15),(F," "9," "3," "5," "3," "1):}

For the following grouped frequency distribution find the mode: Class: 3-6,6-9,9-12,12-15,15-18,18-21,21-24 Frequency: 25,10,23,12,3

= 6 andand tancThe value of tan7equal to3-23-212+12+1(2)(2) 13 - 1212-1FB) and13 +52(3) Tom13 +52(4)12-1b is equal

The time required for some students to complete a science experiment and the number of students is shown in the following grouped frequency distribution table. Draw the frequency polygon with the help of histogram using given information : {:("Time required for experiment ( minutes)",20-22,22-24,24-26,26-28,28-30,30-32),("Number of students",6,14,20,16,12,10):}

A class teacher has the following absentee record of 40 student of a class for the whole term. Find the mean number of days a student was absent. {:("Number of days ",0-6,6-10,10-14,14-20,20-28,28-38,38-40),("number of students "," "11," "10," "7," "4," "4," "3," "1):}