Pie Chart basic concept for CAT exam.

CAT stands for common aptitude test. CAT Pie Chart is important and useful in logical section. This topic is an integral part of many competitive exams. An aspirants could except few questions from this topic. As Logical reasoning section contain a total of 20 questions and out of that few questions are from Pie Chart . A Logical Reasoning & Data Interpretation contains 30% weightage in CAT exams.

Explain Pie Chart with Formula and Examples - Embibe

Questions from this section are frequently asked as per pervious paper analysis. To solve the questions based on Pie Chart in CAT, candidates first have to understand the concept. Questions requires a candidate to develop a logical approach towards solving questions.

We can solve questions easily if candidate pay attention while reading the question. Read the article to know more about some tricks, concepts, and solved sample questions. Generally, CAT questions are based on the given data, you need to figure out the actual category of persons.

Pie Charts for CAT Exam.

A pie chart is used to express the relationship between a part-to-whole unit. Each slice of the shows one part, and all the slices are added together, which equals the whole. It is a visual representation of data. A chart is used in everyday lives. It comes under the Data Interpretation & Logical Reasoning section of the CAT Exam and is very scoring.

Use of a pie chart:

In case you want the audience to have an understanding of the parts concerning the whole unit of data.
To convey a segment of data and its size.
It is very helpful in the presentation of data in a systematic manner to be understandable by common people as well.

List of concepts in Pie Chart.

A Proper understanding of concepts of pie chart questions can sail you through all the MBA entrance exams. They are easy to score and less time consuming than other Data Interpretation questions.

Listed below are a few concepts that may help you gain insight on the type of questions asked:

Calculating absolute value from degree or percentage – Application of percentage-based questions which are quite simple to calculate. It could be possible that absolute value is given, and students have to calculate the degree or percentage.
Calculating degree from given percentage- Again a simple concept of converting 100% to 360 degrees.
Percentage increase or decrease – Data will be given for 2 different time period and the candidate needs to calculate the percentage change.
Questions with multiple pie chart- Candidates will have to analyse data given in multiple chart and try to relate the data.
Questions with pie chart and other graphs – CAT, XAT, SNAP, tend to present data with a chart and some other bar graph, line graph, table etc.
Multi-layered Pie chart – The level of difficulty with this concept may be high as the data is complicated and detailed.

Tips to Solve Pie Charts Questions for CAT

You can solve Pie chart based problems by understanding circle properties and learning about the basic concept of percentage.
A 360 degree corresponds to 100 per cent.
To work on a pie chart, consider the size of the angle, i.e. degrees, the value of slice and the total sum of values in a slice.
Round off to the nearest whole number, fractional equivalent or per cent to ensure the equation is easy to solve

How to Prepare

Preparing any topic from the scratch requires patience, hard work, and above all commitment. To prepare for Pie chart, here are some Level-wise preparatory guidelines to follow:

1st Level

Learn Speed calculation: For an effective and quick calculation, be thorough with tables till 20, memorize squares till 30, and cubes till 15.
Fraction – Percentage relation: For quick percentage calculation, memorize the fraction-percentage table. For example, 1/2 is 50%, 1/3 is 33.33%, and so on. It will help analyse percentage change, absolute value calculation etc.
Learn percentage change formula.
Practice beginner level questions with only one pie chart and no other graphs.

2nd Level

Move on to more complex problems, attempt beginner and intermediate level mock on concepts of Pie chart.
Solve previous year CAT questions on Pie chart and time yourself. Do not get stuck on one question and try to solve easy questions first.
Keep attempting mocks to check your performance.
Topic-wise mocks, provided by MBAP, can be utilized to enhance your performance.

3rd Level

For advanced level preparation, start practising questions from Arun Sharma.
Questions in Arun Sharma are categorized into Level of Difficulty (LOD), based upon your preparation level, start attempting 3 or 4 questions daily.

Video’s that could help aspirant.

Pie Chart Solved Example

For example

The following pie chart shows the amount of subscription generated for Indian Bonds from different categories of Investors.

Question 1: If the investment by NRI’s are INR 4,000 crore, then investment by both corporate houses and FII’s together is:

a.) 24000 crores

b.) 24363 crores

c.) 25423.4 crores

d.) 25643.3 crores

Question 2: What percentage of total investment is coming from either FII’s or NRI’s?

a.) 33%

b.) 44%

c.) 11%

d.) 22%

Solution:

Ans 1: If the investment by NRI is worth 4000 crores which is 11% of total value.

Then, the total value will be = 4000 * 100/11

= 36363.63

Now, investment by corporate houses and FII’s together will be 67% of 36363.63 i.e. 24,363.63 crore.

Ans 2: As This is a very direct question and the answer is 44%

Question for practice of Pie chart.

CAT 2018: The multi-layered pie-chart below shows the sales of LED television sets for a big retail electronics outlet during 2016 and 2017. The outer layer shows the monthly sales during this period, with each label showing the month followed by sales figure of that month. For some months, the sales figures are not given in the chart. The middle-layer shows quarter-wise aggregate sales figures (in some cases, aggregate quarter-wise sales numbers are not given next to the quarter). The innermost layer shows annual sales. It is known that the sales figures during the three months of the second quarter (April, May, June) of 2016 form an arithmetic progression. As do the three-monthly sales figures in the fourth quarter (October, November, December) of that year.

1. In which quarter of 2017 was the percentage increase in sales from the same quarter of 2016 the highest?

a.) Q4

b.) Q1

c.) Q2

d.) Q3

Ans 1: We need to evaluate the quarter with the highest increase in sales in percentage terms.

Quarter	Increase in sales	Percentage terms
Q1	140	58.333%
Q2	50	33.333%
Q3	(30)	(12%)
Q4	200	66.67%

Hence, using the above table we get the answer is Quarter 4

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