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In data interpretation, data will be given in the form of graphs or table and followed by questions. We need to analyze and understand the given data and solve the questions. Data Interpretation has no particular syllabus. It tests your speed and decision making capability.

- Arithmetic topics of Percentages, averages and ratios will help a lot in solving data interpretation questions besides calculations. Students have to be perfect of these topics. The key to cracking this area is to quickly identify the key pieces of data that you will require to work on the question asked.
- Data can be represented in the form of tables, graphs or even caselets. While tables express actual numbers, graphs are a diagrammatic representation of data. They bring out the relationship between data more clearly than numbers in a table. For example, a pie-chart can bring out clearly the percentage that a student's marks in various subjects of an examination and in which subject he got more marks in which it is less, while a table would require you to actually calculate the percentage of each subject marks.
- Graphs are far better to understand changes in variables - whether a particular value has risen or fallen over the past few years and hence analyze the trends.

### Tips to solve Data Interpretation Questions Quickly

- Read the graph carefully and understand the data.
- Read the legend or footnotes properly.
- Skip questions that need more calculations.
- Try to find out the trend of the graph so that some questions can be answered without calculations.

### Different Types of Data Interpretation Problems which are asked in IBPS PO Online Exams

#### Line Graphs

Line Graph represents data in the form of straight lines that connect various data values. A line graph is a way to summarize how two pieces of information are related and how they vary depending on one another The numbers along a side of the line graph are called the scale. Each variable is plotted along an axis. A line graph has a vertical axis and a horizontal axis.

You can classify line graphs into two types. Those are, Single and Multiple Line graphs.

**Single Line Graphs :**

**Example**: Following Line graph gives the production of a company over the years 1999 to 2005

**Multiple Line Graphs :**

**Example**: Below Multiple Line graph represents Profit Percent earned by two companies (A and B)

**Check Example Problem on Multiple Line Graph from here**

####
**Bar Graphs**

Bar Graphs represents data in the form of columns or Bars. Bar graphs can be horizontal or vertical. The length of the bar is proportional to the data value represented by it. The width of the bars is largely inessential and is used only for the clarity of the presentation. Bar graphs makes the comparative study of the data very easy. A bar graph consists of a group of bars which are equidistant from each other. The values on the bar charts are read by the measurement of the length of the height of the bars. There are different types of bar diagrams.

**Simple Bar Diagram**

The simple bar diagram is the simplest bar chart which has one continuous variable charted along with one discrete variable. Figure below shows an example of Simple Bar Chart.

**Ex**: Following Bar diagram shows the production of a company in various years.

**Check Example Problem on Single Bar diagram from here**

**Multiple Bar Diagram**

When two or more sets of continuous variables are to be shown on the same bar chart, we use multiple bar diagram. Figure below shows an example of the multiple bar diagram.

**Example**: Following Multiple Bar diagram shows the production and sale of products of various companies in a month.

**Check Example Problem on Multiple Bar diagram from here**

**Subdivided Bar Diagrams**

A sub divided bar diagram is a bar graph which compares two or more quantities simultaneously. It is preferable when comparing two sets of related data and is an extension of the simple bar graph. Sub-divided bar diagram is also known as Component bar graph.

**Example :**Below subdivided bar diagram gives the production of vehicles by three companies over the years 1994 to 2000.

**Check Example Problem on Subdivided / Component Bar diagram from here**

####
**Pie Charts**

Pie Charts are specific types of data presentation where the data is represented in the form of a circle. In a pie chart, a circle is divided into various sections or segments such that each sector or segment represents a certain proportion or percentage of the total. In such a diagram, the total of all the given items is equated to 360 degrees and the degrees of angles, representing different items, are calculated proportionately. The entire diagram looks like a pie and its components resembles slices cut from a pie.

- The pie chart is used to show the break-up of one continuous variable into its component parts. They always represent data in the form of a percentage of the total, with the total percentage being 100. In such a chart, the length of the arc is proportional to the quantity it represents. Since a circle comprises 360 degrees, each percent of a pie-chart is equal to 360 divided by 100, or 3.6 degrees.

**Example**: Below pie chart shows income from various taxes.

**Check Example Problem on Pie-Chart from here**

####
**Tables **

A table is a set of data arranged in rows and columns and is one of the most common way of putting information across to people. A table consists of several boxes with information inside. The first row and the first column are generally used to denote the titles. While any type of data can be presented in table form, that too in a very accurate manner, interpreting the data in table form is more difficult and time consuming than the other graphs.

**Example :**Below table shows the number of workers working in various factories for the span of 6 months.

####
**Caselets / Paragraphs**

In caselets, the mathematical data is represented in the form of a paragraph. In this case,

**data is hidden between paragraphs and you have to find the data as you go on reading the paragraph.****Check example problem on Caselet from here**

####
**Mixed Graphs**

Data is represented in two or more different types of data sets. It could be combination of a table and a graph or two or more graphs. You may have to correlate the data in different data sets to solve these questions. Thus interpreting data takes a little time.**Check an example problem on Mixed Graph from here**

####
**Radar Graph**

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.

**Example**: Below radar Graph gives the number of students (in thousands) in two different universities in six different years.

**Check an example problem on Radar Graph from here**

That's all for now friends. From our next post, we shall start Quantitative Aptitude Lessons for upcoming IBPS PO IV and Clerks IV Online Exams. Happy Reading :)

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Thank you so much for the excellent analysis

ReplyDeleteneed more di and other q.a problems mam plz post quickly mam

ReplyDeleteThank you for your valuable post,

ReplyDeletei just want to know how much marks will come from data interpretation will come (approximately)

Almost 50% of questions will be from Data Interpretation. I mean for at-least 20 marks.

DeleteThank you...

DeleteWhat type of chart will come for IBPS PO

ReplyDeleteAny type from the Above dude... Not any specified one...

DeleteV!na¥ D!f!c!L

Team Plz provide us DI which was asked in SBI PO exam coz it was hell toughed.

ReplyDeleteis it possible to get ibps po2013 question papers?

ReplyDeletethank u so mam

ReplyDeletePlz madam as early as possible

ReplyDeleteThank you so much

ReplyDeleteplz update d tricks to solve data interpretation pblms..plz update the material detailed material to cracl the data interpretation questions

ReplyDeleteplease provide us D.I portion of sbi po exam with solution n short tricks,it will help us in ibps po exam bcs same pattern will come of D.I in ibps po..so kindly post it..

ReplyDelete