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CBSE Class 11-science Answered

Asked by Topperlearning User | 15 Nov, 2016, 03:45: AM
answered-by-expert Expert Answer

 

x

f

cf

d=|x-median|

fd

5

2

2

8

16

7

4

6

6

24

9

6

12

4

24

11

8

20

2

16

13

10

30

0

0

15

12

42

2

24

17

8

50

4

32

N equals 50 rightwards double arrow N over 2 equals 25 T h e space c u m u l a t i v e space f r e q u e n c y space j u s t space g r e a t e r space t h a n space 25 space i s space 30. C o r r e s p o n d i n g space v a l u e space o f space x space i s 13 space s o space t h e space m e d i a n space i s space 13. M e a n space d e v i a t i o n space a b o u t space m e d i a n space i s space equals fraction numerator begin display style sum from i equals 1 to 7 of end style f subscript i d subscript i over denominator N end fraction equals fraction numerator 16 plus 24 plus 24 plus 16 plus 0 plus 24 plus 32 over denominator 50 end fraction equals 2.72

Answered by | 15 Nov, 2016, 05:45: AM

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