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NCERT Exemplar Solutions Class 10 Mathematics Solutions for Statistics and Probability - Exercise 13.1 in Chapter 13 - Statistics and Probability

Question 6 Statistics and Probability - Exercise 13.1

In the formula \overline{x}=a+\frac{f_id_i}{f_i}

For finding the mean of grouped data dis are deviations from a of

Answer:

We know,

di = xi – a

Where,

xi are data and ‘a’ is the assumed mean

So, di are the deviations from of mid – points of the classes.

Hence, the option (C) is correct

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