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:-
Now check this:-
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.
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.
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%
Visual Estimation
Give a look to this diagram
Now check this:-
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:-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.
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Answer one simple question, In which year growth rate in bars is highest ?
ReplyDeleteYou asked 4 questions in a row!!
ReplyDeleteI was just explaining the method, its all your wish if you take it as 20% instead of 10%.
i think the answer to wheat- rice % increase question should be 2005 not 2006
Deleteno sorry its 2006
Delete2006 is correct answer.
DeleteI couldn't understand the visual estimation problem explained in this section
ReplyDeletedata interpretation tricks PLS PDF FILE
Deletevisiual estimation needs practice ...
Deleteyou need to calculate in your mind first
DeleteThanks Bhuvan
ReplyDeleteBest of luck for your exam. Please share this blog on Facebook :)
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,,,,
ReplyDeleteThanx a lot
Thanks Bhuvan
DeleteIt is just an example
ReplyDeleteSIR PLZ CAN U HELP ME ON SOME MORE QUES OF DI...
Delete@nitish I am making a detailed video lesson for Data Interpretation
ReplyDeleteSIR..,
ReplyDeleteI NEED THE SEPEARTE SYLLABUS FOR THE SBI CLERICAL EXAM
Syllabus for SBI clerical exam is same as above
DeleteSir will u please explain how to interpret the data in 3D bar and pie charts as it was asked in PO exam 2013
ReplyDeleteYes sure, pie charts questions were really easy
Deletecan you explain the last faster calcilation technique?
ReplyDeleteTry to solve questions by estimation
DeleteHi i have a query ..can anybody pls anwser
DeleteAgain I did not understand how the 1st prob is solved. Please explain Sir.
ReplyDeleteIt's not a question. It's just a trick, that 10% of 100 bigger than 10% of 50
DeleteOk, but then why is it written that the ans should be 2006?
DeleteBecause rate of increase is higher in 2006
ReplyDeleteSir, 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?
DeleteCould u plzz clarify?
Increase happened in 2006 not 2005.. And I too don't know y 70 has been considered..?
Deleteok..I will remember the trick :) Thank you.
ReplyDeletehi,can you please tell me what is the format for descriptive section for ibps clerk exam that is online??
ReplyDeleteSSA Sir,
ReplyDeleteAlbeit 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.
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.
ReplyDelete10% 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....
Deletesir i cant understand above problem... i have frusteted.. please share another problem and another explanation...Thank you...
ReplyDeletewhat is the problem ?
DeleteSir, even i am not able to understand how you solved the wheat and rice problem.
ReplyDeleteYou 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.
sir,
ReplyDeletewhat about profit and loss problem in DI.
Please clerify
Sir I m not getting visual estimation problem !!!!
ReplyDelete10% of 50 and 10% of 70...why you took these two number and there 10 % ???
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 ?
ReplyDeleteand this section, i did not understand the visual representation problem .how wheat got 70?
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.
ReplyDeleteThank you once again. :)
Sir plz can you tell me how many questions we should solve in each section for clear these exams.
ReplyDeletesorry but didn't get your technique for the question no 1 will you please explain.....
ReplyDeletesorry sir., even i couldnt able to understand the logic of 1st problem.
ReplyDeleteit would be grateful if u could take any other example to explain this.
sorry sir i couldnt understand the logic of 1st problem, it would be grateful if u could explain this taking any other example.
ReplyDeletegood class
ReplyDeleteplease check banking material here: IBPS exam
ReplyDeleteTo all those who got confused in the bar-graph example;
ReplyDeleteRamandeep 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! :)
As per ur explanation, largest is 5/50 which is 2005 production. then why the ans is 2006???
DeleteIn which year growth % is maximum?
Delete2005 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
For bar-graph question, the logic given is wrong.............think this way:
ReplyDeleteevery 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!
what does this mean?? answer should be 2005, 2006 or 2007.
DeleteAs per your trick answer should be 2005. and by any chance, answer 2006 does not seems to be correct. Please explain elaboratly.
Thanks :)
Sir i cant understand the data interpretations problems please send me pfd file
ReplyDeletesir pls upload last five years question paper for ibps clerk exam question ... pls soon sir...(ibps clerk previous year question ) ... s.rohitrathi@gmail.com ...
ReplyDeleteAlready available, check previous posts
DeleteSir... pls upload shortcut methods for remembering reasoning.
ReplyDeleteWill do that soon
DeleteI am still not clear about the wheat percentage , can u explain briefly....?
ReplyDeletechange happened in 2006 not in 2005,for all those people who have this doubt....
ReplyDelete5/50*100=10% increase in 2006
ReplyDelete5/55*100=9.9 increase in 2007
......
......
so maxium increase happend in year 2006 and after that decrease in all year respectively
I am not understand your teaching way.....
ReplyDeleteHow to find square root of 6084 is there any shortcut method to find squre root or cube root
ReplyDeleteI 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
Deletemay be the way is not right but the ans is right...
ReplyDeletelets 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%
Nice really helpfull.. Thanks for sharing tricks..
ReplyDeleteare you sponsor of testpanda?
ReplyDeleteYes
Delete