Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days
For Business Enquiry


Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number


Mon to Sat - 11 AM to 8 PM

I am supposed to make a frequency polygon where the classes are 0.5-6.5,6.5-12.5 and so on.the class size is 6 and the first class mark is 3.5.As per the rules i calculated the class mark of the class preceeding 0.5-6.5 which is -2.5. My question is how to plot -2.5 on the histogram, where there is a kink? Moreover, between 3.5 and -2.5 how do we find out the origin?

Asked by 3rd March 2013, 9:46 PM
Answered by Expert
In a frequency polygon, the class mark/class size is plotted on the x-axis, whereas the frequency is plotted on the y axis. So, in your case, you can easily plot the -2.5 as well as 3.5 mark on the x axis and plot the corresponding frequencies on the y axis and then just join the points to get the frequency polygon. Even if there is a kink, the kink would be on the positive side of the graph. The plotting on a graph does not depend on kink actually, it is just to hide some portion of a graph. To find the origin, just remove kink and plot x axis without it. 
Answered by Expert 4th March 2013, 6:33 AM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!

Chat with us on WhatsApp