The marks obtained by 40 students in class X of a certain school in a – InterviewSolution

1.	The marks obtained by 40 students in class X of a certain school in a math paper of 50 marks total, are presented in the table. Find the mean using direct method. Marks obtainedNumber of students0−10310−20420−301330−401540−505
Answer» The marks obtained by 40 students in class X of a certain school in a math paper of 50 marks total, are presented in the table. Find the mean using direct method. $\begin{matrix} Marks obtained & Number of students 0 - 10 & 3 10 - 20 & 4 20 - 30 & 13 30 - 40 & 15 40 - 50 & 5 \end{matrix}$

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