The following table gives the marks obtained by the students of a class in an exam out of 50. MarksNo. of StudentsBelow 105Below 2010Below 3023Below 4031Below 5040(i) Convert the cumulative frequency distribution into a regular frequency distribution.(ii) Find the mean. [3 MARKS]

The following table gives the marks obtained by the students of a clas

1.	The following table gives the marks obtained by the students of a class in an exam out of 50. MarksNo. of StudentsBelow 105Below 2010Below 3023Below 4031Below 5040(i) Convert the cumulative frequency distribution into a regular frequency distribution.(ii) Find the mean. [3 MARKS]
Answer» The following table gives the marks obtained by the students of a class in an exam out of 50. $\begin{matrix} Marks & No. of Students B e l o w 10 & 5 B e l o w 20 & 10 B e l o w 30 & 23 B e l o w 40 & 31 B e l o w 50 & 40 \end{matrix}$ (i) Convert the cumulative frequency distribution into a regular frequency distribution. (ii) Find the mean. [3 MARKS]