Question

frequency polygon without histogram​

Answer 1

How to draw frequency polygon without histogram :

Here we are going to see how to draw frequency polygon without histogram.

Step 1 :

Obtain the frequency distribution and compute the mid points of each class interval.

Step 2 :

Represent the mid points along the X-axis and the frequencies along the Y-axis.

Step 3 :

Plot the points corresponding to the frequency at each mid point.

Step 4 :

Join these points, by straight lines in order.

Step 5 :

To complete the polygon join the point at each end immediately to the lower or higher class marks (as the case may be at zero frequency) on the X-axis.