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Q.

While computing mean of grouped data, we assume that the frequencies are,

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a

Centered

b

Cornered

c

Cannot be said

d

None

answer is A.

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Detailed Solution

We know,
Frequency can be said about how often something occurs.
The mean is the average of the given numbers or observations, therefore, it is easy to calculate the mean.
First of all we will add up all the observations and then divide by the total number of observations.
Hence while we computing mean of grouped data, we assume that the frequencies are centered at the class marks of the classes.
Therefore, option 1 is correct.

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