A student draws a cumulative frequency curve for the marks obtained by 40 students of a class as shown below. Find the median marks obtained by the students of the class.
Here, N = 40
Draw a line parallel to x-axis from the point (0, 20), intersecting the graph at point P.
Now, draw PM from P on the x-axis. The x-coordinate of M gives us the median.
$\therefore$ Median $=50$