In data interpretation, we are given data in the form of visuals, like table, graph, chart, etc. and a set of questions that follow. Mainly, they use percentage , ratio or proportion.
Here, we discuss some commonly asked questions.
Question : The following table contains the data of train arrival and train departure from a station. Study the table and answer the questions that follow :
a) Find the number of trains that arrived late
b) Find the number of trains that departed late
c) Find the percentage of late arriving trains
a) Number of trains arriving late = 114 + 31 + 5 = 150
b) Number of trains departing late = 82 + 5 + 3 = 90
c) Percentage of late arriving trains = (150 / 1400) x 100 = 10.71 %
Question : Study the following bar graph and answer the questions that follow :
Total monthly income = Rs. 50,000
a) What amount is spent on food ?
b) How much more money is spent on clothing and housing together than on transportation?
c) What percent of amount on food is spent as amount on education?
a) Food = 20 % of expenditure
=> Amount spent on food = 20% of 50,000 = Rs. 10,000
b) Money spent on clothing and housing together = 25 % of Rs. 50,000 = Rs. 12,500
Money spent on transportation = 20 % of Rs. 50,000 = Rs. 10,000
Therefore, more money spent on clothing and housing together than on transportation = Rs. 12,500-10,000 = Rs. 2,500
c) Expenditure on food = 20 %
Expenditure on education = 5 %
Therefore, percent of amount on food spent as amount on education = (5 / 20) x 100 = 25 %
Question : Study the pie chart below and answer the questions that follow :
The above pie chart shows the sales of four different types of articles in a shop.
a) What is the central angle of type A ?
b) If the total sale is 1200, what is the sale of B ?
c) What is the difference between the central angle of C and D ?
a) Central angle of A = Percentage of A x 360 degrees = (35 / 100) x 360 = 126 degrees
b) Sales of B = 20 % of 1200 = 240
c) Difference between the central angle of C and D = 40 % of 360 – 5 % of 360 = 35 % of 360 = 126 degrees
This article has been contributed by Nishant Arora
Please write comments if you have any doubts related to the topic discussed above, or if you are facing difficulty in any question or if you would like to discuss a question other than those mentioned above.
Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above
Attention reader! Don’t stop learning now. Get hold of all the important DSA concepts with the DSA Self Paced Course at a student-friendly price and become industry ready.
- Data Sufficiency
- Understanding Data Attribute Types | Qualitative and Quantitative
- Barclays Interview Experience | On-Campus ( Virtual ) September 2020
- Minimize splits to generate monotonous Substrings from given String
- Minimize Sum of an Array by at most K reductions
- Add and Remove Edge in Adjacency Matrix representation of a Graph
- Check if two nodes are on same path in a tree | Set 2
- Minimum count of numbers required with unit digit X that sums up to N
- Print the longest path from root to leaf in a Binary tree
- Largest number M less than N such that XOR of M and N is even
- Shortest path in a complement graph
- First element of every K sets having consecutive elements with exactly K prime factors less than N
- Puzzle | Single Elimination Tournament
- Minimum changes required to make all Array elements Prime