Writetheformulaforclassmark
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Step-by-step explanation:
class mark = lower limit + upper limit
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Answer:
From equation (1) and equation (4), we have formula for the class mark and class size for a given class interval respectively. Hence, ClassMark=actualupperlimit+actual lowerlimit2 and classsize=actualupperlimit - actuallowerlimit .
Step-by-step explanation:
Example problem: Find the midpoint for class limits of 180 & 199. The average of the class limits is (180 + 199) / 2 = 189.5. This is your midpoint. You might see the class mark defined as the average of the class boundaries as well.
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