The upper class limit of the class interval 40 - 90 is-55-80-90-40-

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Standard VIII

Mathematics

Class Marks

The upper cla...

Question

The upper class limit of the class interval 40 - 90 is

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Fill in the blanks :
(i) Lower class limit of 15-18 is ___ .
(ii) Upper class limit of 24-30 is ___.
(iii) Upper limit of 5-12.5 is ___.
(iv) If the upper and the lower limits of a class interval are 16 and 10; the class interval is ___.
(v) If the lower and the upper limits of a class interval are 7.5 and 12.5; the class interval is ___.

Q. What is the average of the lower - class limit and the upper - class limit of the interval 40 – 70?

Class Interval	Frequency
10-20	5
20-30	10
30-40	4
40-50	13
50-60	8
60-70	3
70-80	8
80-90	9
90-100	11

From the table above, identify the class interval for the fifth class.

Q. What is the class mark of the class interval-(80-90)?

Class-intervals	$50 - 60$	$60 - 70$	$70 - 80$	$80 - 90$	$90 - 100$	$100 - 110$
Frequency	$30$	$25$	$45$	$15$	$20$	$40$

Draw a histogram to represent this data:

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