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The class mark of class interval 60 – 70 will be
- a)75
- b)65
- c)70
- d)60
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
The class mark of class interval 60 – 70 will bea)75b)65c)70d)60...
class mark = [lower class interval + upper class interval]/2
= (60+70)/2
= 130/2
= 65
(if the intervals are of uniform width)
Most Upvoted Answer
The class mark of class interval 60 – 70 will bea)75b)65c)70d)60...
Class Mark Calculation for Class Interval 60 - 70:
To find the class mark of a particular class interval, we need to calculate the midpoint of the interval. The class mark is the average of the lower and upper limits of the class interval.
Formula:
Class mark = (Lower limit + Upper limit) / 2
Given Class Interval:
Lower limit = 60
Upper limit = 70
Calculation:
Class mark = (60 + 70) / 2
Class mark = 130 / 2
Class mark = 65
Therefore, the class mark of the class interval 60 - 70 is 65.
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Community Answer
The class mark of class interval 60 – 70 will bea)75b)65c)70d)60...
Class mark=lower marks+upper mark ——————————————
2
60+70
-----------
2
130
--------
2
65
2
60+70
-----------
2
130
--------
2
65
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The class mark of class interval 60 – 70 will bea)75b)65c)70d)60Correct answer is option 'B'. Can you explain this answer?
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