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CAT Introduction to Table based DI - Practice Questions & MCQ

Edited By admin | Updated on Sep 25, 2023 25:47 PM | #CAT

Quick Facts

  • 18 Questions around this concept.

Solve by difficulty

Directions for question:

The Jadavpur University’s Prince Anwar Shah Road hostel consists of two large separate buildings, one for the ladies and the other for the gents, while having a common kitchen and dining hall. It is the hostel of the CS and the EEC department of engineering students of the university.

In recognition of the growing dissatisfaction and hence complaints among the inmates of the hostel regarding the menu served for dinner, the Dean of the engineering department, Dr Aparesh Sanyal, personally decided to investigate the matter. He set about collecting information about the preference of dinner among the inmates, separately from the gents and the ladies wing of the hostel.

Dr Sanyal was able to gather the following partial information :  

 

Hostel inmates

Menu preference for dinner

Total

Egg Meal

Fish Meal

Chicken Meal

Gents

   

20

 

Ladies

     

64

Total

 

60

   

 

The Warden of the hostel was consulted, who after investigation declared that the following facts were clear :

1. Forty per cent of the hostel inmates were ladies

2. One-third of the gentlemen inmates preferred an egg meal for dinner

3. Half the hostel inmates preferred either fish meal or chicken meal

Question: What proportion of the lady hostel inmates preferred a fish meal for dinner?

Directions for question:

The Jadavpur University’s Prince Anwar Shah Road hostel consists of two large separate buildings, one for the ladies and the other for the gents, while having a common kitchen and dining hall. It is the hostel of the CS and the EEC department of engineering students of the university.

In recognition of the growing dissatisfaction and hence complaints among the inmates of the hostel regarding the menu served for dinner, the Dean of the engineering department, Dr Aparesh Sanyal, personally decided to investigate the matter. He set about collecting information about the preference of dinner among the inmates, separately from the gents and the ladies wing of the hostel.

Dr Sanyal was able to gather the following partial information :  

 

Hostel inmates

Menu preference for dinner

Total

Egg Meal

Fish Meal

Chicken Meal

Gents

   

20

 

Ladies

     

64

Total

 

60

   

 

The Warden of the hostel was consulted, who after investigation declared that the following facts were clear :

1. Forty per cent of the hostel inmates were ladies

2. One-third of the gentlemen inmates preferred an egg meal for dinner

3. Half the hostel inmates preferred either fish meal or chicken meal

Question: How many of the hostel inmates were ladies who preferred a chicken meal for dinner?

Directions for question:
A week before Durga Puja, a Traffic Police Inspector during his beat in front of the Regional Transport Office at Padmapukur, Kolkata, noticed 120 brand new private Sedans, Hatchbacks and SUVs and 30, 4x4 wheelers, which had applied for new registration, queued up along the road in front of the Regional Transport Office to get registered. The vehicles and their owners were blocking up a substantial portion of the very busy road for about a kilometre, leading to traffic snarls.
On enquiry, the manager at the office showed the inspector on his desktop screen a currently updated table showing the data of the individual number of the four necessary documents whose verification has been completed, on all the private vehicles in queue. The manager explained that the time taken to verify the documents was causing the delay in registration.
The table on the desktop screen is reproduced below.

COMPLETED

Sedan

Hatchback

SUV

4x4 Wheelers

Verification of Insurance Certificate

84

102

78

27

Verification of Sales Invoice from dealer

93

96

102

22

Verification of Identity proof of owner

117

111

93

10

Verification of filled-up Form 20

78

99

87

29 

Help the Inspector to analyze the situation at that point in time by answering the following questions using the data from the table, assuming that these four documents mentioned in the table are the only documents needed for registration.
Question: What can be the maximum number of Sedans in the queue whose registration can be processed immediately due to the completion of verification of all the four documents necessary for registration?

Directions for question:
A week before Durga Puja, a Traffic Police Inspector during his beat in front of the Regional Transport Office at Padmapukur, Kolkata, noticed 120 brand new private Sedans, Hatchbacks and SUVs and 30, 4x4 Wheelers, which had applied for new registration, queued up along the road in front of the Regional Transport Office to get registered. The vehicles and their owners were blocking up a substantial portion of the very busy road for about a kilometre, leading to traffic snarls.
On enquiry, the manager at the office showed the inspector on his desktop screen a currently updated table showing the data of the individual number of the four necessary documents whose verification has been completed, on all the private vehicles in queue. The manager explained that the time taken to verify the documents was causing the delay in registration. 
The table on the desktop screen is reproduced below.   

COMPLETED

Sedan

Hatchback

SUV

4x4 Wheelers

Verification of Insurance Certificate

84

102

78

27

Verification of Sales Invoice from dealer

93

96

102

22

Verification of Identity proof of owner

117

111

93

10

Verification of filled-up Form 20

78

99

87

29

Help the Inspector to analyze the situation now by answering the following questions using the data from the table, assuming that these four documents mentioned in the table are the only documents needed for registration.
Question: What can be the maximum number of Hatchbacks in the queue whose verification of exactly one document necessary for registration is completed?

Directions for question: In the audition for the 2022 edition of the mega quiz show 'Dadagiri', hosted by the former Indian cricket captain Mr Sourav Ganguly, there were seven rounds to be passed before getting selected for the final show. 

The audition for the Kolkata segment took place simultaneously in five areas – Behala, Ballygunge, Dumdum, Shyambazar and Salt Lake.

The number of auditionees who failed in the different rounds in the five areas is given below:

 

Number of auditionees who failed

 

1st Round

2nd Round

3rd Round

4th Round

5th Round

6th Round

7th Round

Behala

76

64

50

42

34

36

22

Ballygunge

42

58

34

42

30

10

14

Dumdum

64

50

48

40

34

26

20

Shyambazar

56

52

56

38

28

20

8

Salt Lake

86

74

52

38

42

26

18

Question: The number of auditionees in Behala who passed in the fifth round of ‘Dadagiri’ was found to be twice the number who got selected in the final. How many people auditioned for the first round in Behala?

Directions for question: In the audition for the 2022 edition of the mega quiz show 'Dadagiri', hosted by the former Indian cricket captain Mr Sourav Ganguly, there were seven rounds to be passed before getting selected for the final show. 

The audition for the Kolkata segment took place simultaneously in five areas – Behala, Ballygunge, Dumdum, Shyambazar and Salt Lake.

The number of auditionees who failed in the different rounds in the five areas is given below:

 

Number of auditionees who failed

 

1st Round

2nd Round

3rd Round

4th Round

5th Round

6th Round

7th Round

Behala

76

64

50

42

34

36

22

Ballygunge

42

58

34

42

30

10

14

Dumdum

64

50

48

40

34

26

20

Shyambazar

56

52

56

38

28

20

8

Salt Lake

86

74

52

38

42

26

18

Question: If the number of auditionees who got selected in the final show of ‘Dadagiri’ in Dumdum was equal to that in Salt Lake, what was the difference between those who passed the second round in both the above areas?

Directions for question: In the audition for the 2022 edition of the mega quiz show 'Dadagiri', hosted by the former Indian cricket captain Mr Sourav Ganguly, there were seven rounds to be passed before getting selected for the final show. 

The audition for the Kolkata segment took place simultaneously in five areas – Behala, Ballygunge, Dumdum, Shyambazar and Salt Lake.

The number of auditionees who failed in the different rounds in the five areas is given below:

 

Number of auditionees who failed

 

1st Round

2nd Round

3rd Round

4th Round

5th Round

6th Round

7th Round

Behala

76

64

50

42

34

36

22

Ballygunge

42

58

34

42

30

10

14

Dumdum

64

50

48

40

34

26

20

Shyambazar

56

52

56

38

28

20

8

Salt Lake

86

74

52

38

42

26

18

Question: If 240 people auditioned for the first round of ‘Dadagiri’ in Ballygunge, in which round was the percentage of passes at Ballygunge the fifth highest in rank?

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Directions for question:
The following table shows the expenditure behind employee wages and the value of the annual production of six of the top manufacturing companies in India, in the financial year of 2021-22 :

Manufacturing Company Annual Employee Wages (thousand crores of Rs) Annual Production (thousand crores of Rs)
Reliance Petrochem 3.1 360
Tata Steel 3.4 219
Larsen & Toubro 1.5 135
Tata Motors 2.8 128
Hindustan Unilever 1.5 113
Dabur 1.1 96

The following pie chart shows the break-up of the number of employees of the companies as a percentage of the total number of employees of the six companies, which was 6 lakhs in 2021-22:

Annual Wages per employee and Annual Production per employee are the average Annual Wages and Annual Production per employee of a company respectively.
Question: What is the ratio (rounded to the second decimal place) of the Annual production per employee of Tata Steel and Hindustan Unilever? 

Concepts Covered - 1

Introduction to Table based DI

Introduction: Table-based Data Interpretation is a fundamental skill for understanding and drawing insights from data presented in tabular format. This skill is valuable for making informed decisions and solving real-world problems that involve data analysis. Here, we will explore the key principles and techniques involved in Table-based Data Interpretation.

1. Understanding Table Structure:

  • Tables consist of rows and columns.
  • The top row typically contains column headings or labels that describe the data within each column.
  • Rows below the headings represent individual entities, such as products, time periods, or geographic regions.

2. Identifying Data Types:

  • Tables can contain various types of data, including numerical values, percentages, text, or any other relevant information.
  • It's essential to grasp the meaning and context of each column to interpret the data accurately.

3. Extracting Information:

  • Carefully read any associated problem statement or context that specifies what information you need to extract or analyze from the table.

4. Recognizing Trends and Patterns:

  • Examine the data for any discernible trends, patterns, or irregularities. These might include rising or falling values, similarities or differences between rows or columns, or any data outliers.

5. Performing Calculations:

  • Many problems will require you to perform calculations based on the table data. Be prepared to calculate percentages, growth rates, averages, or other relevant metrics to answer questions accurately.

6. Units of Measurement:

  • Pay close attention to the units of measurement used in the table, as these are critical for performing accurate calculations and interpreting the data correctly.

Example Table:

Let's consider an example table to illustrate these concepts:

Year     

Revenue (in millions)

Expenses (in millions)

Profit Margin (%)

2019

100

70

30%

2020

120

85

29.2%

2021

140

95

32.1%

2022

160

110

31.25%

Analyzing the Example Table:

  • This table represents the financial performance of an entity over four years.
  • The "Year" column indicates the respective years.
  • The "Revenue" and "Expenses" columns contain financial figures in millions.
  • "Profit Margin" is presented as a percentage.

Interpreting the Data:

  • You can observe that revenue has steadily increased over the years, from 100 million in 2019 to 160 million in 2022.
  • Expenses have also risen, from 70 million in 2019 to 110 million in 2022.
  • The "Profit Margin" column indicates the profitability, calculated as (Profit / Revenue) * 100. It fluctuates slightly but remains around 30%.

Sample Question: Given the data, you might be asked to determine the year with the highest profit margin. To answer this, calculate the profit margin for each year and compare the values.

Conclusion: Table-based Data Interpretation is a vital skill for anyone working with data. Mastering this skill enables you to make informed decisions and uncover insights from tables of information. Practice with a variety of tables and questions to strengthen your proficiency in interpreting data accurately.

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