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Data Interpretation - Tricks and Techniques

Published on Thursday, June 13, 2019
By Ramandeep Singh
Data interpretation is the most scoring and time-consuming section in IBPS and other competitive examinations. Today I am sharing quick estimation techniques to solve Data interpretation questions:-

Visual Estimation

Give a look to this diagram

data interpretation visual estimation


Now check this:-
data interpretation techniques

Example - Red bars states wheat production state and Green bars states rice production.

Question - In which year percentage increase Wheat production was highest?

As you can see there is an increase of 5 tonnes in production both wheat and rice production every year.

10% of 50 = 5

10% of 70 = 7

So the answer should 2006.

Finding averages

Many times in Data Interpretation, questions are asked to find the average of many big numbers. As all these numbers are from the same graph, there is a high probability that these number will be close to each other. Take a look at following visual example:-

data interpretation trick
In the above example, you can find the average of above number in just 5 seconds:-

7800 ( 14 +29 + 108 + 22 + 120/5 ) = 7800 + 58.6 = 7858.6

I always try to find answers by approximation, in my mind, I calculated answer 7860. Try it yourself.

Solve the fractions quickly

Learn the value of fractions in percentages. Please read Time and work chapter in my previous post in which I explained via a table.

Faster calculations

The only thing that you require to score well in data interpretation questions is the calculation speed. Try to find tricks and shortcuts. You can find multiplication tricks from my previous post.

Let's take an example :- How much 468 of 21428 ?

Let me make this simple for you.

1% of 21428 = 214
2% of 21428 = 428
0.1% of 21428 = 21

For me, the answer should be around 2.2%

There are tonnes of such techniques which makes calculations easy. No teacher is going to teach techniques in the class. You need to learn them with practice.

DI Workbook PDF Free Download

  • Data Interpretation Workbook Version 1
  • Data Interpretation Workbook Version 2
  • Data Interpretation Workbook Version 3
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Labels: data interpretation

66 comments:

  1. raman2572October 12, 2013 at 12:14 PM

    Answer one simple question, In which year growth rate in bars is highest ?

    ReplyDelete
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  2. raman2572October 12, 2013 at 12:14 PM

    You asked 4 questions in a row!!
    I was just explaining the method, its all your wish if you take it as 20% instead of 10%.

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    1. AnonymousApril 10, 2014 at 12:40 AM

      i think the answer to wheat- rice % increase question should be 2005 not 2006

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    2. AnonymousApril 10, 2014 at 12:42 AM

      no sorry its 2006

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    3. AnonymousNovember 13, 2014 at 6:28 PM

      2006 is correct answer.

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  3. priyaOctober 12, 2013 at 2:01 PM

    I couldn't understand the visual estimation problem explained in this section

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    1. Gubendhiran JNovember 27, 2013 at 5:36 PM

      data interpretation tricks PLS PDF FILE

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    2. AnonymousJune 27, 2014 at 7:27 PM

      visiual estimation needs practice ...

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    3. AnonymousSeptember 19, 2014 at 12:28 AM

      you need to calculate in your mind first

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  4. raman2572October 12, 2013 at 6:09 PM

    Thanks Bhuvan
    Best of luck for your exam. Please share this blog on Facebook :)

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  5. BHUVANOctober 12, 2013 at 6:09 PM

    I will try to improve on data interpretation sets,,,besides all these queries I feel that you are sharing ur experience and knowledge in a very detailed and practical manner...by reading ur notes and strategies I've gained much confidence,,,,
    Thanx a lot

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    1. Ramandeep SinghOctober 26, 2013 at 12:27 PM

      Thanks Bhuvan

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  6. raman2572October 12, 2013 at 6:21 PM

    It is just an example

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    1. nitish kumarOctober 13, 2013 at 1:38 PM

      SIR PLZ CAN U HELP ME ON SOME MORE QUES OF DI...

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  7. Ramandeep SinghOctober 13, 2013 at 1:52 PM

    @nitish I am making a detailed video lesson for Data Interpretation

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  8. jeeva wushuOctober 22, 2013 at 6:11 PM

    SIR..,
    I NEED THE SEPEARTE SYLLABUS FOR THE SBI CLERICAL EXAM

    ReplyDelete
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    1. Ramandeep SinghOctober 22, 2013 at 8:21 PM

      Syllabus for SBI clerical exam is same as above

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  9. AnonymousOctober 23, 2013 at 9:47 PM

    Sir will u please explain how to interpret the data in 3D bar and pie charts as it was asked in PO exam 2013

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    1. Ramandeep SinghOctober 23, 2013 at 10:20 PM

      Yes sure, pie charts questions were really easy

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  10. AnonymousOctober 26, 2013 at 11:40 AM

    can you explain the last faster calcilation technique?

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    1. Ramandeep SinghOctober 26, 2013 at 12:45 PM

      Try to solve questions by estimation

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    2. Subi PuthalathJune 23, 2014 at 5:02 PM

      Hi i have a query ..can anybody pls anwser

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  11. Nimmi shibzNovember 10, 2013 at 7:48 PM

    Again I did not understand how the 1st prob is solved. Please explain Sir.

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    1. Ramandeep SinghNovember 11, 2013 at 12:10 PM

      It's not a question. It's just a trick, that 10% of 100 bigger than 10% of 50

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    2. Nimmi shibzNovember 11, 2013 at 9:52 PM

      Ok, but then why is it written that the ans should be 2006?

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  12. Ramandeep SinghNovember 11, 2013 at 11:05 PM

    Because rate of increase is higher in 2006

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    1. AnonymousMay 23, 2014 at 6:28 PM

      Sir, For each annual year, it seems same difference in Wheat production na sir? Then how it is only 2006 yr.?? And as the question is about only wheat production, why 70 numerical has taken?
      Could u plzz clarify?

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    2. AnonymousMay 24, 2014 at 3:34 PM

      Increase happened in 2006 not 2005.. And I too don't know y 70 has been considered..?

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  13. Nimmi shibzNovember 12, 2013 at 9:29 PM

    ok..I will remember the trick :) Thank you.

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  14. AnonymousNovember 19, 2013 at 12:52 PM

    hi,can you please tell me what is the format for descriptive section for ibps clerk exam that is online??

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  15. vinamra singhDecember 1, 2013 at 11:24 PM

    SSA Sir,
    Albeit I read the comments mentioned above[for the first question], still unable to understand why you used 10% of 50 and 70 respecively. In the graph, wheat production has never been 50. Could you please repeat what prompted you to take this step. I'll be extremely grateful to you.

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  16. vinamra singhDecember 1, 2013 at 11:27 PM

    Also, Ideally in the same first question if you take 10% of 70 (maximum value of wheat production) among all the years, then answer should be 2008. Still Unable to figure out, what's the trick there.

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    1. AnonymousMay 24, 2014 at 3:38 PM

      10% of 50 = 5 it happened in 2006, and now 10% of 55 is 5.5 but it is jus 55+5= 60 not 60.5~ 5.5(<10) so it is try only at 55....

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  17. AnonymousJanuary 18, 2014 at 10:17 PM

    sir i cant understand above problem... i have frusteted.. please share another problem and another explanation...Thank you...

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    1. Ramandeep SinghJanuary 18, 2014 at 11:57 PM

      what is the problem ?

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  18. AnonymousMarch 11, 2014 at 8:04 PM

    Sir, even i am not able to understand how you solved the wheat and rice problem.
    You have taken 10% of 50 for wheat for 2005 and 10% of 70 for rice for 2008 and you gave the answer as 2006, how is it related, please explain elaborately and in detail.

    Thanks in advance.

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  19. AnonymousApril 8, 2014 at 6:31 PM

    sir,
    what about profit and loss problem in DI.
    Please clerify

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  20. RahulApril 8, 2014 at 11:48 PM

    Sir I m not getting visual estimation problem !!!!
    10% of 50 and 10% of 70...why you took these two number and there 10 % ???

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  21. Priya SubhaApril 9, 2014 at 6:21 AM

    sir i am a beginner ,i find this tricks and your sharing experience very useful and motivates me to work further .thanks a lot.since i am a beginner can you suggest me few guidelines in preparing for bank exams ?
    and this section, i did not understand the visual representation problem .how wheat got 70?

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  22. AnonymousApril 9, 2014 at 6:03 PM

    Sir your website is awesome.... i have been going to class which teach these techniques but the way u explain here is totally awesome than anyone else....i was randomly searching for a good website and for ur website very useful.Thank u so much for sharing these techniques for students like me.
    Thank you once again. :)

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  23. AnonymousApril 15, 2014 at 1:37 PM

    Sir plz can you tell me how many questions we should solve in each section for clear these exams.

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  24. AnonymousApril 15, 2014 at 5:10 PM

    sorry but didn't get your technique for the question no 1 will you please explain.....

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  25. Jaya durga PillutlaApril 23, 2014 at 5:34 PM

    sorry sir., even i couldnt able to understand the logic of 1st problem.
    it would be grateful if u could take any other example to explain this.

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  26. Jaya durga PillutlaApril 23, 2014 at 5:35 PM

    sorry sir i couldnt understand the logic of 1st problem, it would be grateful if u could explain this taking any other example.

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  27. Piyush ShakyaMay 1, 2014 at 5:51 PM

    good class

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  28. Chandra Prabhat MauryaMay 8, 2014 at 10:54 PM

    please check banking material here: IBPS exam

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  29. UnknownMay 22, 2014 at 1:50 AM

    To all those who got confused in the bar-graph example;
    Ramandeep sir wanted you to think on the following line: % increase in 2006 is 10%......after that even if we take the highest no., i.e. 70, its 10% needs to be 7....but change in production is always 5....meaning that production is less than 10% always.....thus 10% increase is highest and that is in 2006.

    However, this isn't the correct approach and it's too clumsy.
    Easy one is:
    there is an increment of 5 every time. Thus, out of 5/50, 5/55, 5/60, 5/65.....(and so on even if there were more years) obviously due to constant numerator, the fraction with smallest denominator will be largest.
    This one thing, if strikes at once to you, shall make the answer simple.
    Hope you get it now! :)

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    1. Bhavani ThirumalasettyMay 24, 2014 at 11:01 AM

      As per ur explanation, largest is 5/50 which is 2005 production. then why the ans is 2006???

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    2. PRAVEEN03September 10, 2014 at 11:05 PM

      In which year growth % is maximum?
      2005 is definitely not the answer , to find out growth % in 2005 you must know the weat production in 2004 which is not given
      And now you can see the difference between last year and present year production is 5 in all the cases
      Game of fraction
      For maximum % growth you must multiply 5 with a fraction which is greater than 1 ,ie 100/55...I hope it's fine now

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  30. UnknownMay 22, 2014 at 1:56 AM

    For bar-graph question, the logic given is wrong.............think this way:
    every year increment is of 5....thus: 5/50, 5/55, 5/60........out of these, one with smallest denominator is the largest fraction as numerator is constant for all. Simple!

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    1. AnonymousJune 13, 2014 at 5:51 PM

      what does this mean?? answer should be 2005, 2006 or 2007.
      As per your trick answer should be 2005. and by any chance, answer 2006 does not seems to be correct. Please explain elaboratly.

      Thanks :)

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  31. Saritha DoulagharMay 22, 2014 at 1:37 PM

    Sir i cant understand the data interpretations problems please send me pfd file

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  32. Rohit RathiJune 12, 2014 at 2:59 PM

    sir pls upload last five years question paper for ibps clerk exam question ... pls soon sir...(ibps clerk previous year question ) ... s.rohitrathi@gmail.com ...

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    1. Ramandeep SinghJune 18, 2014 at 2:32 PM

      Already available, check previous posts

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  33. Polu SateeshJune 18, 2014 at 11:13 AM

    Sir... pls upload shortcut methods for remembering reasoning.

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    1. Ramandeep SinghJune 18, 2014 at 2:32 PM

      Will do that soon

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  34. AnonymousJune 26, 2014 at 12:11 AM

    I am still not clear about the wheat percentage , can u explain briefly....?

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  35. shaliniJune 30, 2014 at 4:19 PM

    change happened in 2006 not in 2005,for all those people who have this doubt....

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  36. AnonymousJuly 2, 2014 at 2:54 PM

    5/50*100=10% increase in 2006
    5/55*100=9.9 increase in 2007
    ......
    ......
    so maxium increase happend in year 2006 and after that decrease in all year respectively

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  37. AnonymousAugust 5, 2014 at 6:10 PM

    I am not understand your teaching way.....

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  38. AnonymousAugust 6, 2014 at 8:01 PM

    How to find square root of 6084 is there any shortcut method to find squre root or cube root

    ReplyDelete
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    1. AnonymousOctober 17, 2014 at 2:25 AM

      I think it depends on the option.....but without options, I check its divisibly till one digit n those who are squares of some number (such as 4 and 9)...I found it to be divisible by 9 and when you divide it by 9...the number become 676...which is the square root of 26...I learnt square root till 30....it took barely a minute or less

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  39. AnonymousSeptember 11, 2014 at 11:14 PM

    may be the way is not right but the ans is right...

    lets understand this ques in easy way..
    change of 5 tonnes in each year..
    so when we calculate for 2006 its increment of 10% in compare to 2005
    i.e. 10% of 50 and add it to the 50 which will be 55

    the same thing when you applied for the rest year you will get that up coming year have the increment of less than 10%

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  40. AnonymousSeptember 16, 2014 at 11:34 PM

    Nice really helpfull.. Thanks for sharing tricks..

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  41. Arul PrakashSeptember 20, 2014 at 12:13 PM

    are you sponsor of testpanda?

    ReplyDelete
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    1. Ramandeep SinghSeptember 20, 2014 at 6:04 PM

      Yes

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About me

ramandeep singh

My name is Ramandeep Singh. I authored the Quantitative Aptitude Made Easy book. I have been providing online courses and free study material for RBI Grade B, NABARD Grade A, SEBI Grade A and Specialist Officer exams since 2013.

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