A complete Guide to DI for beginners: DI is the most important topic in quantitative aptitude for bank exams. It occupies the maximum weightage. Solving DI questions requires special skills. One can score maximum in this section by turning their skills into strength. Today we will discuss how to approach DI questions? How a beginner can solve DI.
In bank exams, you may face 2-3 questions in prelims and the maximum part is covered with DI in the mains exam. Let us discuss a complete guide to DI for beginners and how to tackle questions on different parts of DI.
What is Data Interpretation (DI)?
Data Interpretation is a set of knowledge given in different forms utilizing and visualizing the data to make sense out of it. It may present data, the information in the pie chart, graphical form, tabular form, etc. Generally, DI questions are calculative and time-consuming as compared to other types of questions.
In DI questions you need to extract data from visuals and then apply them to the given questions. DI questions may be based on the topics of Arithmetic like profit and loss, average, and percentages.
Types of DI with Study Notes.
| Tabular DI |
| Pie Chart |
| Line DI |
| Mixed DI |
There can be questions from Missing DI and Caselet paragraphs. You can check the study notes of both below.
Do not miss out to attempt a Quantitative Aptitude quiz for upcoming bank exams.
1. Line Graph DI
This is the simplest form of comparing the two quantities. You might have seen this form several times on social media, comparing two things. For example, it may use to compare GDP growth rate of a country, production in a company in different years, books sold in different years/time, etc.
The line graph is of two types:
- Single line graph (As shown in the picture above)
- Double line graph (Where there are two lines comparing things in a different year)
A line graph generally displays a series of data connected with dots using a straight line. Line graph helps to understand the growth or outcome for different years.
2. Bar-Graph DI
It is the second-most important type of DI asked in bank exams. Bar Graph DI is also known as Bar charts. It generally presents explicit data with rectangular bars. There are two types of the bar graph, horizontal and vertical. There can be two values/bars comparing the commodities/years with others.
For example, the above bar graph shows data of the year 2011 and 2012 where information about different sports is given.
3. Pie Chart- DI
A pie chart presents information very easily. It is the best style of presenting the information to the readers. In this part, information is divide into small blocks with percentages or numbers. Here in this image above, Infomation about sports like tennis, swimming, badminton, etc. is given.
Information given in the question can be used easily to find the answer thrown at you in the examination.
4. Tabular DI
In the tabular form of DI, the information in the table form is given. It can display information comparing either two or three units. In the above table, information about sports for the years 2011 and 2012 is given. Based on the information provided, students can easily solve the questions.
Strategy to solve DI Questions
1. Read the questions carefully: Unlike other topics, it is important to read the question and instructions associated with it. Try to find the concept on which the DI is based. Like it may be calculative, it may be based on percentage, average, or even profit and loss statements. The first step is to find the concept.
2. Examine the data given in the questions: The next step is the analyze the data given in the questions whether tabular DI, pie chart, mixed or other. Once you analyze the data or information carefully, you will be able to tackle questions based on that particular DI very easily.
3. Always make Notes: While practicing for the DI questions, it is important to make notes as you may find several tricks while solving their questions. Try to note down your own method of solving questions so that you can revise them at the time of the exam.
4. Be careful with the values: Be very wise while dealing with the values. As in bank examinations especially in the mains exams, DI questions are quite tricky. Sometimes it is difficult to find the exact values. So learn to find the approximate values also.
5. Learn the shortcut: You will not have the luxury to solve the questions according to your convenience as the time would be limited. You will have to learn shortcuts and ways to compute them. This will help you save time and solve questions within seconds.
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