# Radar Charts / Spider Charts of Data Interpretation - Introduction

Friends, now a days in the Data Interpretation section of competitive exams like SBI PO and SSC CGL, they have been asking questions from a strange looking graph, which appears like a spider web. We have been getting a number of requests to explain these graphs. We hope this article will clarify all your doubts.

Those graphs are called Radar Charts.

The radar chart is a chart that consists of a sequence of equi-angular spokes, called radii, with each spoke representing one of the variables. The radar chart, also known as a spider chart or a star chart because of its appearance, has its zero starting point in the middle. From the middle, each axis of the chart can protrude out like the spokes on a wheel. There can be one axis for each subject, and there is no limit on the number of subjects that can be used. It can also be described as a radial grid with the zero starting point being the middle.

### Importance of Radar Chart :

Assume that somebody asked you to analyze and compare the production and profit details of three companies (Let Company A, Company B and Company C). Usually people tend to draw bar charts or tables. So assume that you plotted a traditional bar chart for the above purpose. Now you have to observe each cluster of bars separately. But when there are a large number of variables, the bar Chart might look cluttered. It is kind of difficult task for you to analyze the given bar charts.

In such scenarios, try the Radar Chart instead. The radar chart is not as cluttered as the bar chart, making it more appealing to the reader. The connected pattern of the radar chart allows the reader to see the relative position of Company A to Company B and Company C quicker than with the bar chart, whether the reader is examining the attributes independently or collectively.

### When to use Radar Chart ?

• If you can’t accommodate different quantitative scales in a bar graph
• If the objective if to compare symmetry rather than magnitudes

• It is used for a quick visual interpretation of data from various sources.
• The radar chart is not as cluttered as the bar chart.
• It is not designed to be used for identifying the accuracy in data, but rather generalized relationships between data.
Now let's have a look at an example :

Assume that you have the marks details of 9 students from Two schools (School 1 and School 2). The tabular representation of the data will be,
 School 1 School 2 35 43 45 52 75 65 65 85 53 32 79 45 53 75 62 39 58 56

Bar Chart Representation :

That's all for now friends. In our next post we shall discuss some example problems on Radar Chart. Happy Reading :)

Read complete study materials of SBI PO Online Exam 2014 from here

1. Aroshree MohanthiJune 7, 2014 at 9:54 PM

2. I always love the way you explain things. Waiting for the model problems on this topic.

Thanks

3. Pls provide quick reference for current affairs and banking awareness.. 1 week more for our xam so pls provide it quickly... thank you

1. Banking Basics are enough. No need to read banking awareness for SBI PO exam.

2. In the sbi po syllabus they says that the question contains banking awareness for 16 marks

3. 16 marks ? No way..

I bet somebody is misleading you.

4. I don't understand the radar chart representation.plz describe again....

1. Working with an example friend. You will get it soon.

5. Thanku...its awsome

6. thank you

7. Just 6-7 days remaining for first phase of exam plz upload GA reference guide soon. Also try to include banking awareness in it .

Thank You.

8. Mam can you pls tel how much words we need to write for an essay in descriptive paper ?

9. Very very very helpful... Thanks mam...

10. Hey shivani...please provide us with the Quick Referemnce guide naah...its been so lomg that i have been waiting for the same....n not only meeh i guess other aspirants are also eqagerly waiting...Please please make it available asap...my exam date is 15/06/2014....n m madly getting nervous :(. ...btw ur a true savior to us..thnx fo evrything...God bless yu honey...love ur efforts...! Please revert ... :)

1. Sorry for the delay sis. Working on it. We will upload it by tomorrow.

Good Day

11. Thanks a lot... but need some examples with tricky questions...

12. Thanks ... and need some examples with tricky questions... and My dear admin. please provide quick reference guide da... my exam date will be on 14/06/2014 please... please... please... :-(

13. So nice.. plz upload material of English for sbi p.o