For the given class of 90-120- the class mark is - -11510512090

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Standard IX

Mathematics

Mid Point of Class Interval

For the given...

Question

For the given class of 90-120, the class mark is ______ .

115

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105

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120

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Q. The class mark of the class 100−120 is
(a) 100
(b) 110
(c) 115
(d) 120

Question 1
The class mark of class 90 - 120 is:

A) 90
B) 105
C) 115
D) 120

(i) Find the class mark of the class 90-120.
(ii) In a frequency distribution, the mid-value of the class is 10 and width of the class is 6. Find the lower limit of the class.
(iii) The width of each of five continuous classes in a frequency distribution is 5 and lower class limit of the lowest class is 10. What is the upper class limit of the highest class?
(iv) The class marks of a frequency distribution are 15, 20, 25, .... Find the class corresponding to the class mark 20.
(v) In the class intervals 10-20, 20-30, find the class in which 20 is included.

Q. For the given class of 90-120, the class mark is ______ .

The class mark of class $90 - 120$ is

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