Data Interpretation PDF for EPFO Assistant Pre 2019 and Take DI Quiz with PDF for EPFO with Solution at Smartkeeda

Directions : Study the following table chart carefully and answer the questions given beside.

The following tables gives the information about the percentage change in the population of five cities, A, B, C, D, and E from 2015 to 2017. 

City From 2015 to 2016 From 2016 to 2017
A – 20 +20
B +15 – 10
C +25 + 25
D – 10 + 40
E + 40 – 20
1
If the population of city A in the year 2015 was 10,000 then what was its population in the year 2017?
» Explain it
B
The population of city A decreased by 20% from 2015 to 2016 and again it increased by 20% from 2016 to 2017

The population of city A in 2017

= 10,000 ×  80  ×  120  = 9600
100 100

Hence, option B is correct.
2
In the year 2016, the ratio of the population of city E to the population of city C was 4 : 5. Then what was the respective ratio of their population in the year 2017?
» Explain it
A
Let the population of city E in the year 2016 = 4x then in the year 2017 it will be decreased by 20%

In the year 2017 = (100 – 20)% of 4x = 80% of 4x

= 80 ×  4x
100

And the population of city C in the year 2016 = 5x then in the year 2017
= (100 + 25)% of 5x = 125 ×  5x
100

The reqd. ratio = 80 ×  4x  : 125 ×  5x  = 64 : 125
100 100

Hence, option A is correct.
3
Suppose, in the year 2016, the population of all the cities was equal, then in the year 2015 the population of city D was approximately what percent more than than the population of city C?
» Explain it
D
Let in the year 2016, the population of all the cities were equal = x

Let population of city C in the year 2015 = a then (100 + 25)% of a = x

a =  100x  =  4x
125 5

Let the population of city D in the year 2015 = b then (100 – 10)% of b = x
 
b =  100x  =  10x
90 9

The reqd. % = 
10x  –  4x
9 5
 × 100 =     ×     × 100
14x 5
4x 45 4x
5    

   = 38.89% = approximately 39%
350
9
 

Hence, option D is correct.
4
What is the total percentage increase in the population of city E from the year 2015 to 2017?
» Explain it
A
Let the population of city E in the year 2015 = x

Then the population of city E in the year 2016 will become = (100 + 40)% of x = 1.4x

In the year 2017 = (100 – 20)% of 1.4x = 80% of 1.4x = 1.12x

The reqd. % increase =  (1.12x – x) × 100  = 12%
x
Hence, option A is correct.

Alternate method:

By using successive increase/decrease in percentage-
40 – 20 – (40 ×  20 ) = 20 – 8 = 12%
100
5
In the year 2015, the population of city C was 25% more than the population of city D, then in the year 2017 the population of city C will be what percent more than the population of city D? 
» Explain it
C
In the year 2015, let the population of city D = 4x then the population of city C = 125% of 4x = 5x

In the year 2017, the population of city C will become

125  ×  125  × 5x =  125x  = 7.8125x
100 100 16

(from 2015 to 2016 it was increased by 25% again from 2016 to 2017 it was increased by 25%)

In the year 2017, the population of city D will become
90  ×  140  × 4x =  126x  = 5.04x
100 100 25

(from 2015 to 2016 it was decreased by 10% and from 2016 to 2017 it was increased by 40%)
 
The reqd. % =  7.8125x – 5.04x  × 100 = approximately 55%
5.04x

Hence, option C is correct.

Data Interpretation Online Test for RRB Scale I Pre 2019, IBPS PO and EPFO Asst. Pre 2019


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In this article we will discuss What is Data Interpretation, How its important for Bank PO, Insurance and Clerk Exams.

What is Data Interpretation and how its useful for RRB Scale I Pre, IBPS Clerk, EPFO Asst. Pre,  etc

In our day-to-day life, data is reported in the newspapers, on television, and in magazines. The data involves business, government, sports and many other topics. It is represented in an organized fashion, making it easy to interpret what you hear and read in the media. Those set of problems is being asked in different kind of form like Pie Chart di, Bar Chart di, Table Chart di, line chart di and info chart etc.

Now come back to the point data interpretation,  Data has to be well organized for it to be useful. This process of interpreting and analysing data to extract meaningful information from it is Data Interpretation. Solving Data Interpretation problems involves the use of basic formulas and manipulation of numbers.
Data Interpretation is calculation-intensive. It consists of a myriad of graphs, charts and tables form which you have to glean and analyse data. The key to cracking this area is to quickly identify the key pieces of data that you require to work on the questions asked.

Problems in Data interpretation are probably the closest in resemblance to the kind of problems you will be dealing with as a manager. They test your decision-making ability and speed using the minimum possible data. They help you to draw conclusions from collected data, support decision making, and contribute to better process, product, and quality models.

Data Sufficiency problems involve testing your quantitative concepts. They usually take the form of a logical puzzle. Instead of solving a data sufficiency problem, all you need to do is determine if the given information is enough to solve the problem. To solve Data Interpretation Questions & Answers for Banking and Insurance Exams like SBI, IBPS, NABARD & RBI Grade B, NIACL, and LIC, you need to brush up your calculation skills; you need to perform calculations faster and accurately than others. The difficult Data interpretations should be solved within 10-12 minutes. The DI of moderate level should not consume more than 7-9 minutes of the time and easy DI's should be finished within 3.5-4 minutes.

In these Data Interpretation Quizzes, you familiarized yourself with the key concepts and improved your problem-solving abilities. At Smartkeeda you will get Easy level data interpretation to High level data interpretation at low cost. Practice and tests are important to optimize your preparation. First take the quizzes regarding your exams and take full mock test at Testzone to improve your problem-solving skills. Questions that have appeared in the previous IBPS PO exams are also a part of these quizzes. Go through them you can understand where the focus lies in an examination environment. The detailed solutions of the questions may provide some alternate strategies that can help you improve your speed and accuracy.
 
At Smartkeeda you can attempt High Level Data Interpretation quizzes and download (DI) PDF for free.