# I have written the number of children belonging to each of 40 families in our locality below—I prepare a frequency distribution table of the above given data whose classes are 0 –2, 2–4, ……. etc.From this frequency distribution table, let me understand and write(i) class - interval(ii) class - size(iii) frequency of the class(iv) class - limit.

class - size = upper class boundary – lower class boundary

lower class boundary = lower limit - 0.5

Upper class boundary = upper limit + 0.5

Mid value of class

Frequency density

From the given data, we can see that number of children in the range 0 - 2 belongs to 11 families, Similarly for other ranges Table is formulated below, Using the above formulas.

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