In the formula Z = l + left( frac{f_{1} - f_{ | vedclass

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(C) In the formula for the mode of grouped data,$Z = l + \left( \frac{f_{1} - f_{0}}{2f_{1} - f_{0} - f_{2}} ight) 	imes c$,the term $f_{1}$ repres

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frequency of the modal class

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(C) In the formula for the mode of grouped data,$Z = l + \left( \frac{f_{1} - f_{0}}{2f_{1} - f_{0} - f_{2}} ight) 	imes c$,the term $f_{1}$ represents the frequency of the modal class. Here,$l$ is the lower limit of the modal class,$f_{0}$ is the frequency of the class preceding the modal class,$f_{2}$ is the frequency of the class succeeding the modal class,and $c$ is the class size (or class length).

In the formula $Z = l + \left( \frac{f_{1} - f_{0}}{2f_{1} - f_{0} - f_{2}} \right) \times c$ for the mode,$f_{1} = \ldots \ldots \ldots$

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