Find the class mark of the class intervals 3.5 - 6.5

CLASS MARK= (UPPER LIMIT+ LOWER LIMIT/ 2)

=> 3.5+6.5/2

=> 10/2= 5

THEREFORE, THE CLASS MARK OF CLASS INTERVAL 3.5-6.5= 5

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(3.5 + 6.5)/2 = 10/2 = 5
 
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