NCERT Class 9 Mathematics

(lily) #1

346 MATHEMATICS


File Name : C:\Computer Station\Maths-IX\Chapter\Answers (16–12–2005) PM65


EXERCISE 14.3



  1. (ii) Reproductive health conditions.

  2. (ii) Party A 4.(ii) Frequency polygon (iii) No 5.(ii) 184

  3. Age (in years) Frequency Width Length of the rectangle


1 - 2 5 1


(^515)
1



2 - 3 3 1


(^313)
1



3 - 5 6 2


(^613)
2


✂ ✄


5 - 7 12 2


(^1216)
2



7 - 10 9 3


(^913)
3


☎ ✆


10 - 15 10 5


10


12


5


✝ ✞


15 - 17 4 2


4


12


2


✂ ✄


Now, you can draw the histogram, using these lengths.


  1. (i) Number of letters Frequency Width of Length of
    interval rectangle


1 - 4 6 3


(^624)
3


✝ ✞


4 - 6 30 2


(^30230)
2


✂ ✄


6 - 8 44 2


(^44244)
2


✂ ✄


8 - 12 16 4


(^1628)
4


✂ ✄


12 - 20 4 8


4


21


8


✝ ✞


Now, draw the histogram.
(ii) 6 - 8
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