Question

while assuming mean of grouped data, we assume that the frequencies are

Answer 1

Answer:

While computing mean of grouped data, we assume that the frequencies are : evenly distributed over all the classes. centred at the class-marks of the classes. centred at the upper limits of the classes. centred at the lower limits of the classes.

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Answer 2

Answer:

assumed mean = a + submission of xi- di /submission of xi