Dear Aspirants,
The SBI PO Mains exam is just around the corner, which is scheduled to be held on 31st July 2016. To score good marks, it is essential to understand the pattern of the all the sections so that one can qualify the Mains exam with better score.
The most crucial section in the SBI PO Mains Exam is the Data Analysis & Interpretation. The section consists of total 35 questions and of 45 minutes duration.
Data Analysis & Interpretation has always been the most difficult section in SBI PO Mains Exam and we expect it to be the same this time too. This sections test your calculation and analytical approach i.e. your ability to interpret data and information given in the form representation like, Pie chart, Bar graph, Table Chart, Line Graph etc.
Nearly all the D.I. questions are based upon Ratio, Percentage and Average chapters of Arithmetic. You should know the basic rules applied in each chapter.
The level of the questions generally ranges from being Moderate to Difficult. Before attempting the questions, one should look the data or graph carefully, understand the small specifications and the type of questions asked in the exam.
Some key facts related to Data Interpretation Questions:
1. The questions consist of Percentage increase/decrease.
2. The questions consist of finding the average/ ratio.
3. The questions consist of finding total/ difference.
So we can say that a set of data interpretation questions are basically the normal questions using the huge amount of data. The various possible categories of data interpretation are as follows:
(1) Tabular Presentation
(2) Line Chart
(3) Bar Chart
(4) Pie Chart
(5) Mixed DI
(6) Paragraph/Caselet/ Language DI
(7) Probability
(8) Data Sufficiency
Now let us have in – depth knowledge of the description of the Questions asked in the Paper-
(1). Tabular Presentation – In this category of DI, a table having some data will be provided. For example –The following table gives the production of two types of items by four different companies in six different years.
The questions asked can be like –
1. What was the respective ratio between the number of items of Type-II produced by Company-R in the year of 2010 and the number of items of Type-I produced by Company-Q in the year of 2008?
2. What was the approximate percent decrease in number of items of Type-II that Company-P produced in the year of 2011 as compared to previous year?
(2). Line Graph– In this DI type, data has to be interpreted from various lines drawn on a particular scale. After analyzing the data, we have to answer the given questions. For ex –
The line graph shows the number of persons who died in train accidents in various states in different Years
The questions asked can be like –
1. The number of persons who died in train accidents in 1993 is how much percent more than the number of persons who died in the train accident in 1991?
2. In which state is the number of persons who died in the train accidents the maximum during the given period?
(3). Bar Chart – In this category of DI questions, data is provided in form of some bars which is very easy to understand. However the questions asked can have long calculations.
The following Bar Graph represents amounts invested by three persons P, Q and R in six different years.
The questions asked can be like –
1. The average production of Total food grain, Oil seeds, Cotton and Sugarcane in the year 2010-11 is approximately what percentage of the total production of the total food grain, Cotton and Jute in the year 2011-12?
2. In 2011-12 the production of Kharif Crops and Rabi Crops was in the ratio of 4:3 then what was the production of Rabi Crops in the mentioned year?
(4). Pie Chart – Sometimes the data is given in the form of a circular pie. More than one pie chart can be given to make the calculations more challenging. For ex –
The following pie-chart gives the percentage of passengers travelling by six different trains and the percentage of male passengers among those passengers. Total Number of Passengers = 10000
The questions asked can be like –
1. What was the average number of passengers in train-D, train E and train-F together?
2. The total number of passengers travelling by train E is approximately how much percent more than the total number of passengers travelling by train F?
(5). Mixed DI– Sometimes, to make the paper lengthy, more than one type of so far stated method of representation of data is used in a single set of DI.
Percentage –wise distribution of the number of mobile phones sold by a shopkeeper during six months.
The respective ratio between the numbers of Mobile phone sold of Company A & B during six months.
The questions asked can be like –
1. If 35% of the mobile phones sold by company A during November were sold at discount, how many mobiles phones of company A during the month were sold without a discount?
2. If the shopkeeper earned a profit of Rs. 433 on each mobile phone sold of company B during October, what was his total profit earned on the mobile phones of that company during the same month?
(6). Paragraph / Caselet DI– In caselets data are given in the form of paragraph. No charts/graphs are provided with the data. Caselets vary considerably in length, in the amount of information contained, in different sentences and paragraph. While reading a caselets it’s always advisable to underline the important fact and figures and if necessary make your own table/chart/graphs for solving the questions. For ex –
Certain number of students passed from five colleges A, B, C, D and E. Total students passed in College A is 18% of the total passed students from all colleges. Ratio of the total passed students from College B to the total passed students from College C is 11:10 and their average value is 420. From College D 300 students passed which is 15% of the total passed students. Students passed in College E is 5/4 of the number of total passed students of College C. Ratio of boys to girls passed from College A is 13 : 5.
The number of passed boys in College B is 240% of the number of passed girls from College A. Ratio of total passed students in College C to the number of girls passed in College C is 20:11. The number of girls passed in College D is 40% more than the number of passed boys in College D. The average of boys passed in all five colleges is 231.
The questions asked can be like –
1. What is the average of the total girls passed in all colleges?
Ans – Average = 845/5 = 169
2. The number of boys passed in College B what percentage more than the number of passed girls?
Ans – [240-200]*100/200 = 20%
Solution figure
(8). Probability – For solving questions on probability, one should have very clear concept of permutation and combination because probability questions are the application of that. If one knows the basics of P&C then probability of any event can be found out by dividing the favorable cases by total cases possible.
1. A bag has 3 red, 5 green and 6 blue candies. What is the probability of picking out either a red or green candy?
(i) 3/7 (ii) 4/7 (iii) 5/7 (iv) 6/7
Answer:2
(9). Data Sufficiency – The best thing about data sufficiency questions is that we don’t have to solve the given questions. We only need to find out which statements are required / sufficient to solve the questions. So these questions are easy in comparison to other questions where we have to do the exact calculations.
Qs. Find the two digit number.
I. The sum of the cubes of the two digits is 133.
II. The digit at unit place is three more than the digit at ten’s place.
III. The ratio of ten’s place digit to units place digit is 2 : 5.
(1) Only I and II together are sufficient.
(2) Only II and III together are sufficient.
(3) Only III and I together are sufficient.
(4) Any two of the three are sufficient.
(5) All I, II and III together are required.
Answer:4
Must read
Complete Data Interpretation Study Notes For Bank Exam
Approach to Solve D.I. Section
1. Do not start solving any set immediately, first glance all the DI. sets and then decide, which set has lesser variables in terms of conditions and time consuming.
2. Fix the time for each set and try to solve easier questions first.
3. Pick 2 or 3 questions from each set which can be solve in lesser time, don’t try to solve all 5 questions of each set, if it finds difficult or lengthy in calculation.
4. For D.I. questions learn the structured approach and in order to answer the questions, it is important that you analyze the right data.
Hence you should make a sensible choice in picking up the right set and doing the right thing before investing any time in a particular set or just jumping from one set to another.
Data Analysis & Interpretation section cutoff of Previous Year Exam
SBI PO Mains 2015 –
SBI PO 2014 Exam –
We hope that these tips will help you all in managing your time properly and come through with flying colors.
Good Luck & Best wishes for your exam!
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