Tables-PO
Tables
In tabular data, all information is given in the form of a table. This is the safest type of data, as all the numerical values are given directly and any errors that could crop up because of the discrepancies in interpretation of graphical data are eliminated. Though this is the simplest form of data representation,the calculations on tabular data can be lengthy and time consuming.
Typical questions asked when this form of data is given include questions on percentage change, growth rate, net change and average values which have to be derived from the values of functions given in the table. As there are no calculators allowed, it might be necessary to approximate certain values to arrive at quick solutions when the numerical values of the answer options are not very close
Study the following table and give answers for the questions below :
Q.1 What is the total marks obtained by Bijay in all subjects?
A) 400
B) 433
C) 290
D) 417
E) None of these
Answer-E
Since sum total = (43 + 56 + 88 + 67 + 75 + 90) = 419
Q-2 What is the average mark in Computer for all students?
A) 87
B) 89
C) 83
D) 98
E) 66
Answer- C
(Sum of marks obtained by all student in Computer divided by 7 ) =
Average marks in computer for all 7 student = 83.
Q-3. Who scored more than 75% in all the subjects?
A) Sonu
B) Mita
C) Bijay
D) Kuni
E) Imran
Answer-B – Mita (Total marks scored by Mita = 529)
Percentage Marks = x 100 = 88%
Q-4 What is the in between overall percentage of Richy?
A) 77 – 78
B) 79 – 80
C) 89 – 90
D) 70 – 71
E) 69 – 70
Answer – E, Total marks of Richy is 418
= 418 divided by 600 x 100 which gives 69.6666….
Q-5 In which subject the overall percentage is the best?
A) Computer
B) English
C) Math
D) Science
E) Economics
Ans. A – Computer (Total 581 highest.)
1. Total 24500 people who are in the given profession and (of these) percentage of female and males. Answer the questions below based on the data given.
1. What is the ratio of the total number of males in the medical and teaching profession together to the ratio of females in the same
professions together?
Solution :
Step 1: Total people = 24500.
As we need to find the ratios, we use the formula
Females ( Medical + Teaching): Males ( Medical + Teaching)
Step 2:
By substituting the values in the above formula
(40% x 11%x 24500) + (20% x 21% x 24500) : (60% x 11% x 24500) + (80% x 21% x 24500)
Step 3:
By eliminating 24500 and percentage as it is common,
according to the concept of ratio we get,
(40 x 11) + (20 x 21) : (60 x 11) + (80 x 21)
Step 4:
By Simplification,
22 + 21 : 33 + 84 = 43 : 117
Therefore, The ratio of total number of Males: Females in the medical and teaching profession together is 43:117
*Note: Don’t write the steps during examination as it consumes a lot of time. Directly jump to the step 3 as 24,500 is common and step 2 can directly be eliminated.
1. Total number of people in the teaching profession is what percent of total number of people in law?
Solution : Total people = 24500.
Step 1:
As we need to find the percentage change, we need to use percentage formula
x is what of % of y = (x/y)100 [Formula]
X-Total number of people in teaching program Y- Total number of people in law
Step 2:
By substitution, (Total number of people in teaching program/ total number of people in law) x100
Step 3:
By substituting values in the above formula, (21% x 24500/24% of 24500) x 100
Step 4:
By simplification,
x 100
Step 5:
By simplification,
x 100
= 87.5%
Therefore, the total percentage of people in the teaching profession is 87.5% of the total percentage of total people in law.
1. What is the total number of Females from all the profession together?
Solution :
Step 1: Total people = 24500
As we need to find the total number of Females in all the profession, we are suppose to take
(the percentage of Females in one profession x percentage of the total number of people in that profession x total number of people) and thus we need to add all the values together.
(40% of 11% of 24500)+(70% of 18%of 24500)+(55% of 24% of 24500)+(20% of 21% of 24500)+ (65% of 16% of 24500)+(56% of 10% of 24500)
Step 2:
By Simplification,
(40 x 11) + (70 x 18) + (55 x 24) + (20 x 21) + (65 x 16) + (56 x 10) = 5040
In examination on average, about 30 to 36 seconds are allotted to solve a question. Though this question appears to be simple the process of calculation is really lengthy as we cannot eliminate any number. The quickest way to solve this question is to leave the question for the end.