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Construct a grouped frequency distribution table taking class width equal to 20 in such a way that the mid-value of first class in 70.

Posted by Mahisha G.T. 3 years, 11 months ago

CBSE > Class 09 > Mathematics

1 answers

Gaurav Seth 3 years, 11 months ago

Here , class width = 20
class mark = 70
Half of the class width =20 /2 =10
Upper limit of first class interval = 70 + 10 = 80
Lower limit of first class interval = 70 – 10 = 60
Thus, class interval becomes 60 – 80
So, frequency distribution table becomes :

(a) Number of oranges weights more than 180 g = 1 + 1 = 2
(b) Number of oranges weights less than 100 g = 3 + 10 = 13

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