What are the requisites for good average? From the following distribution of marks of 200 students of a college: Compute: i. The minimum marks obtained by top 10% students. ii. Modal marks.

What are the requisites for good average?

From the following distribution of marks of 200 students of a college:

$$\begin{array}{c|ccccccc} \text{Marks} & 30\text{-}40 & 40\text{-}50 & 50\text{-}60 & 60\text{-}70 & 70\text{-}80 & 80\text{-}90 \ \hline \text{No. of students} & 14 & 50 & 60 & 45 & 20 & 11 \ \end{array}$$

Compute:

i. The minimum marks obtained by top 10% students.

ii. Modal marks.

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