question_answer

If the class intervals in a frequency distribution are \[\left( \text{72}-\text{73}.\text{9} \right),\left( \text{74}-\text{75}.\text{9} \right),\left( \text{76}-\text{77}.\text{9} \right),\left( \text{78}-\text{79}.\text{9} \right)\]etc., then the mid-point of the class (74-75.9) is

A)  74.50                   

B)         74.90

C)  74.95                     

D)         75.00