Answer :

⇒ Maximum amount of Electricity in class 9.5-14.5

⇒ 9.5-14.5 is modal class

L = lower limit of modal class = 9.5

h = class interval of modal class = 5

f_{1} = frequency of modal class = 50

f_{2} = frequency of class succeeding modal class = 36

f_{0} = frequency of class preceding modal class = 32

⇒ Mode =

⇒ Mode =

⇒ Mode =

⇒ Mode = 12.31 years

Mode age of the patient 12.31 years

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