Step-by-step explanation:
Class mark is defined as the mid-value of each class interval. Class mark can be calculated as: Class mark = Upper limit + Lower limit 2. Thus, formula to find to the class-mark of a class interval is Upper limit + Lower limit 2 .
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Step-by-step explanation:
Class mark is defined as the mid-value of each class interval. Class mark can be calculated as: Class mark = Upper limit + Lower limit 2. Thus, formula to find to the class-mark of a class interval is Upper limit + Lower limit 2 .