 Hello and welcome to the session. My name is Mansi and I'm going to help you with the following question. The question says the following table gives the distribution of students of two sections according to the marks obtained by them. So this is the data for section A and this is the data for section B. Now represent the marks of the students of both the sections on the same graph by two frequency polygons from the two polygons compared the performance of the two sections. First of all we find the class marks for these intervals. We write the class marks in front of these intervals in a bracket. We say that the class marks of the interval 0 to 10 will be 5, for 10 to 20 will be 15, 20 to 30, 25, 30 to 40, 35, 40 to 50, 45 and same for this also. So let us see the graph here. Now on the x-axis we take marks and on the y-axis we take the frequency. So now first of all we obtain the frequency polygon of section A. So for section A we plot the points 5, 3, 15, 9, 25, 17, 35, 12, 45, 9. So let us plot the points for team A or the section A. So these are the points for the section A. Now we join these points to obtain a frequency polygon. Like this we join all these points. Now we will find the frequency polygon for section B. So let us plot the points for section B and they will be 5, 15, 15, 19, 20, 15, 15, 35, 10 and 45, 1. So let us plot these points now. So like this we plot the points for the section B. Now let us join these points also. So like this we join all these points also to get a frequency polygon for section B. So this is our answer to the question. I hope that you understood the question and enjoyed the session. Have a good day.