Question

Easy solution of example 4 chapter 8

Draw histogram and frequency polygon to represent the following group frequency table age in years 22 - 24, 25 -29, 32 -34 ,35 - 39 ,40 - 44, 45 -49 ,52-54 number of teachers 10,28 ,32,48 ,50,35 ,12

Common difference of ap whose general term is an=2n 1

Draw a histogram and frequency polygon to represent the following grouped frequency table. 

Age in years                         Number of teachers 
22-24                                                10
25-29                                                 28
30-34                                                 32
35-39                                                 48
40-44                                                   50
45-49                                                 35
50-54                                                  12

Why we have to take total number as100....

Put the sums in the short term 

Which of the lines 2x-y+3=0& x-4y-7=0 farther from the origin ? 

103.005

1. Find the mean and s.d for the following data xi:6,10,14,18,24,28,30 fi:2,4,7,12,8,4,3

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What  is the meaning of  Tally. 

Example 32

 

I want video of this problem

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class 10 Computer sample paper solution 2018-19

If a=2,d=4 then S20