Class mark of class interval 60 - 70 is

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Solution

The correct option is C 65
Class mark is the mid point of the class interval.
Therefore, the class mark for the interval $60 - 70$ is $\frac{60 + 70}{2} = \frac{130}{2} = 65$

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Similar questions

Q. The class mark for the class interval 70 - 80 is .

Q. The class mark of the class 70-80 in case of exclusive class interval is ______.

Q. Find the class mark of class interval

50 - 60.

The following are the marks obtained in Maths by students of Class 8:
51, 94, 34, 20, 50, 81, 81, 90, 76, 34, 51, 86, 93, 99, 26, 54, 85, 71, 88, 40, 44, 56, 55, 57, 78, 53, 81, 78, 65, 78.
The data have to be grouped to find the mean marks. One of the class intervals made is 60-70.

What is the frequency of the last class interval?

Q. (a)The class interval having highest frequency is-
(b)The class-mark of class 50-60 is-
(c)The size of each class intervals is-

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Class mark of class interval 60 - 70 is

The correct option is C 65Class mark is the mid point of the class interval.Therefore, the class mark for the interval 60−70 is 60+702=1302=65

The correct option is C 65
Class mark is the mid point of the class interval.
Therefore, the class mark for the interval $60 - 70$ is $\frac{60 + 70}{2} = \frac{130}{2} = 65$