Data interpretation questions with solutions pdf download: Data interpretation is a crucial topic of quantitative aptitude, and Data interpretation questions are one of the most important sections in all the competitive examinations and entrance exams; banking exams, and IT Jobs.
Data Interpretation is an interesting topic, but Most students find it hard to clear the Data Interpretation section; In this tutorial, we gonna share with you the key concepts of Data Interpretation along with examples that candidates will find beneficial in their exam preparation. Also;
We are providing all types of DI questions; from basics to advanced levels with answer pdf; which will certainly help you to excel in data interpretation; Please go through the below points to clear all the doubts regarding the di.
First, let us know what is data interpretation. data interpretation is the process of analyzing; reviewing, and making sense out of a collection of data; that has been processed to arrive at a relevant conclusion.
It usually takes place in various forms like table format, pie chart, bar graphs, line charts; or a combination of these and other similar forms.
Here we brought you all types of data interpretation questions pdf with answers; which can be asked in the examination; and see how we can make sense of the given data and learn about data interpretation with the help of some sample questions along with major techniques so let us start!
Data Interpretation Methods
There are two primary methods by which data interpretation can take place; these are quantitative methods and qualitative methods. let’s understand these data representation methods!
Quantitative Data Interpretation Method: The quantitative data interpretation method is to analyze quantitative data; which is also described as numerical data; Quantitative DI is very likely to present through table charts, pie charts, bar or line charts; As the name indicates, this type of DI includes numerical data and needs to apply various mathematical functions like mean, ratio, percentage, etc to find the answers.
Qualitative Data Interpretation Method: The Qualitative data interpretation method is to analyze the qualitative set of information known as categorical data. This method uses descriptive narration rather than numbers or patterns to represent data and is comparatively difficult to analyze.
Types of data interpretation questions charts
Table chart/ graph
It is one of the most common data visualization techniques and the simplest method used to analyze the data and display the data.
A table chart is a set of data arranged in rows and columns and is one of the most common types as most of the information can easily be represented in this form; A table comprises several boxes with information inside.
The first row and first column are generally to indicate the titles. therefore It is one of the basic forms of representing statistical data in a very accurate manner. Although, this is a simple easy method and also more time-consuming other forms are as well.
Tabular DI is also of two types; first where all the data is; and the other one is where some data is missing, and the student happens to find out this missing value. Just go through examples to understand the table chart.
Those types of data representation where bars are to show the comparison between categories of data which we call bar chart/graph; These bars can be either horizontal or vertical and their lengths are proportional to the value that they represent;
One of the parameters is given on the X-axis, and the other on the y-axis; in which one represents particular categories being compared and the other axis shows discrete value. here it is essential to decoding given information on which we can give the answer to the question
The line graphs are pretty similar to the bar chart. It can .that line chart is an upgraded version of a bar chart. If we join the upper point of the bars so that we have a line or curve diagram. This line Or curve represents the quantitative relationship between two changing quantities.
The lines may or may not be distinct in nature and that will determine the difficulty level of the graph. Many questions of a line diagram of comparison as we can compare the growth, increase, and decrease by looking at the slope of the lines in the figure.
Pie charts in DI
Pie charts are different types of data presentation. This data is in the form of a circle. There are sections/ slices into which a pie chart is divided, and each of these sections forms a certain portion of the total; basically,
It is a circular chart divided into various slices; The slices of the circle are constructed in such a way that the area of each slice is proportional to the corresponding values of information provided.
In the pie chart, the total of all the data is equal to 360 degrees. The pie chart shows 180*2 degrees in a circle way which shows a hundred percent of the values of the continuous variable. hence 3.6 degrees represent 1 % of the total values of the variables in a pie chart. In the pie chart, most questions are related to percentages.
It’s a qualitative data interpretation that is completely different from the chart above. A corselet chart is one such type where you need to comprehend lots of data. A long paragraph is provided and some set of questions are asked based on that. So it is important that you understand the data given and how the data is linked. Before solving the question see what you can obtain from the information given to you.
Data interpretation practice questions with answer
Directions (Q1 – Q4) .Study the information given below and answer the following questions:
The table below shows the number of students in a college studying Arts, Science, Commerce, and Business for. given 5 years.
- What is the percentage increase in the number of students of commerce from 2012 to 2016?
- 15.67% Answer : 168-148/148*100=13.51%
- What is the annual growth rate in percent of the number of students of business from 2012 to 2016?
- what is the ratio of average number of students studying arts per year and average number of students studying science per year?
- 4. Which year shows the maximum percentage increase in the total In number of students in these 4 subjects over the previous year?
solving DI questions-
DI questions solving process is as easy as we try to overcome a zig-zag road to cross quickly; it needs to enter inside the given data carefully; because a question can be based on either Percentages, averages, or ratios, anything could be the sort of data like bar Graph, circle, table, etc as mentioned above that we need to solve accordingly.
Let’s assume a question on it –
In the above pic; a few data such as N box, M box, and L box are mentioned in the Graph; to all boxes, colors are distinct from each other, Now other remaining data like “No. of people, Years, and the Company name also available in that above pic,
We have to find the average number of individuals who are using mobile services M for all the years together.
Answer– In the above pic, M Box mobile service has been used from 2004 to 2009; now consider the number of people who have worked in all separate year to year.
- In 2004, the number of people who have worked in M mobile service is 5 according to Graph because (15-10 =5 people), see the white colored box
- in 2005, there are (25-15= 10) people who worked in the same company.
- 45-20= 25 People worked in 2006.
- there are 20 peoples in 2007, because 35-15 =20,
- 25 people worked in 2008.
- 15 people worked in 2009.
according to the question, when we find the average, we get that 5+10+25+20+25+15/6 (applying the average formula).
after solving it; we get the answer 100/6 = 50/3; since the value is given in thousand; so the final answer is option A.