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Class 11
Maths :-NCERT Solutions - Statistics

Page No 360:
Question 6:
Find the mean deviation about the mean for the data

xi

10

30

50

70

90

fi

4

24

28

16



Answer:

xi

fi

fi xi

10

4

40

40

160

30

24

720

20

480

50

28

1400

0

0

70

16

1120

20

320

90

8

720

40

320

80

4000

1280


NCERT Maths Class 11

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