Cumulative Frequency Graph(Less Than Type)

Median OF grouped data || Cumulative frequency distribution table || Different types OF cumulative frequency table less than type and more than or equal to type || Median=L+(n/2-COF/F)h

From following table, what is the cumulative frequency of less than type for the class 30-40 ?

In Case Of Less Than Cumulative Frequency Series

Graph of Cumulative Frequency

What is cumulative frequency of marks less than 15

Following distribution gives cumulative frequencies of 'more than type': Change the above data to a continuous grouped frequency distribution.

Cumulative Frequency Distribution

The abscissa of the point of intersection of the Less Than Type and of the More Than Type cumulative frequency curves of a grouped data gives its