Suppose, we have to find out modal marks from the following frequency

1.	Suppose, we have to find out modal marks from the following frequency distribution: (Table 8.8)
Answer» Solution : `l_(1)=40,` `Delta_(1)=20-9=11` `Delta_(2)=20-10=10,` `i=20(=40-20)` Substituting these values Mode `=l_(1)+(Delta_(1))/(Delta_(1)+Delta_(2))xxi=40+(11)/(11+10)xx20=40+(11)/(21)xx20` `=40+(220)/(21)=40+10.8` approx=50.48 approx.

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