Q. 104.4( 20 Votes )

# The agewise parti

Answer :

To find frequencies, we have Sum of frequencies that is, 181.

Using Sum of frequencies = 181,

x + 15 + 18 + 30 + 50 + 48 + x = 181

2x + 161 = 181

2x = 181 – 161 = 20

x = 10

Thus we have, Here, the maximum class frequency is 50.

The class corresponding to this frequency is the modal class. modal class = 13 - 15

lower limit of the modal class (l) = 13

Modal class size (h) = 2

Frequency of the modal class (f1) = 50

Frequency of class preceding the modal class (f0) = 30

Frequency of class succeeding the modal (f2) = 48

Mode is given by,   Mode = 13 + 1.82 = 14.82

Hence, the mode is 14.82.

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