Question

What is the meaning of "the mid point of each class can be chosen to represent the observations falling in the class".​

Answer 1

Answer:

I think it is median .....but....I am not sure

Answer 2

Answer:

While finding the mean of grouped data, since we don't know which specific value has a certain frequency, we take the mid-point of each class, i.e. class mark (upper limit + lower limit /2) to represent the observations falling in the class. We assume that the frequencies are centred at the class marks of the classes.

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