Question

In a class of 60 boys,the marks obtained in a monthly test were as under: Marks- 10-20,20-30,30-40,40-50,50-60. Students 10,25,12,8,5. Draw a frequency polygon to represent the above data​

Answer 1

Answer:

Expert Answer:

The frequency polygon is shown in the following figure

Since the scale on x-axis starts at 10-20, a kink or a zig-zag curve is shown near the origin to indicate that the graph is drawn to scale beginning at 10-20 not at the origin itself.

Steps:

(i)Drawing a histogram for the given data.

(ii)Marking the mid-point at the top of each rectangle of the histogram drawn.

(iii)Also, marking mid-point of the immediately lower class-interval and mid-point of the immediately higher class-interval.

(iv)Joining the consecutive mid-points marked by straight lines to obtain the required frequency polygon.

12 JULY 2021

Answer 2

Answer:

sorry I don't know that answer