Find the first and third quartile …

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Find the first and third quartile from the following data (hint; arrange marks in ascending order) Marks 10 5 7 11 8 No. Of std. 15 20 15 18 12

Posted by Chumthungo Patton 5 years, 3 months ago

CBSE > Class 11 > Economics

1 answers

Abhishek Thakur 5 years, 2 months ago

X=5,7,8,10,11 F= 20,15,12,15,18 CF= 20,35,47,62,80 Q1= (N+1/4)= (80+1/4)= 20.25th items = 7 Q3= (3×20.25)= 60.75th item= 10

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