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Question

Consider the following table that embodies details about the percentage distribution of population of five states A-E on the basis of poverty line and gender. In accordance with the data in the table, answer the questions

State-wise Distribution of Population

State

Percentage (%) of Population Below Poverty Line

Proportion of Males (M) and Females (F)

Below Poverty Line

Above Poverty Line

M ∶ F

M ∶ F

A

35

5 ∶ 6

6 ∶ 7

B

25

3 ∶ 5

4 ∶ 5

C

24

1 ∶ 2

2 ∶ 3

D

19

3 ∶ 2

5 ∶ 3

E

15

5 ∶ 3

3 ∶ 2

What will be the number of females above poverty line in the state ‘D’, if it is known that the population of the state ‘D’ is 8 million?

The correct answer is

2.43 million

Calculating Females Above Poverty Line in State D

This question asks us to find the number of females above the poverty line in State 'D', given its total population and the distribution data provided in the table.

First, let's examine the relevant data for State 'D' from the table:

State Percentage (%) of Population Below Poverty Line Proportion of Males (M) and Females (F) Below Poverty Line Proportion of Males (M) and Females (F) Above Poverty Line
A 35 5 ∶ 6 6 ∶ 7
B 25 3 ∶ 5 4 ∶ 5
C 24 1 ∶ 2 2 ∶ 3
D 19 3 ∶ 2 5 ∶ 3
E 15 5 ∶ 3 3 ∶ 2

We are given that the total population of State 'D' is 8 million.

From the table, the percentage of the population below the poverty line in State 'D' is 19%.

Therefore, the percentage of the population above the poverty line in State 'D' is:

\( 100\% - \text{Percentage below poverty line} \)

\( 100\% - 19\% = 81\% \)

Now, let's calculate the actual population above the poverty line in State 'D'.

\( \text{Population above poverty line} = \text{Total population of State D} \times \text{Percentage above poverty line} \)

\( \text{Population above poverty line} = 8 \text{ million} \times 81\% \)

\( \text{Population above poverty line} = 8 \times \frac{81}{100} \text{ million} \)

\( \text{Population above poverty line} = 8 \times 0.81 \text{ million} \)

\( \text{Population above poverty line} = 6.48 \text{ million} \)

The table also provides the proportion of males and females above the poverty line in State 'D'. The ratio of Males to Females above the poverty line is 5 ∶ 3.

The total number of parts in this ratio is the sum of the male and female parts:

\( \text{Total ratio parts} = \text{Male parts} + \text{Female parts} \)

\( \text{Total ratio parts} = 5 + 3 = 8 \)

The female population above the poverty line represents 3 out of these 8 parts.

So, the number of females above the poverty line in State 'D' is calculated as follows:

\( \text{Number of females above poverty line} = \left( \frac{\text{Female ratio part}}{\text{Total ratio parts}} \right) \times \text{Population above poverty line} \)

\( \text{Number of females above poverty line} = \left( \frac{3}{8} \right) \times 6.48 \text{ million} \)

\( \text{Number of females above poverty line} = 0.375 \times 6.48 \text{ million} \)

\( \text{Number of females above poverty line} = 2.43 \text{ million} \)

Therefore, the number of females above the poverty line in State 'D' is 2.43 million.

Data Analysis Steps for State D

  • Identify total population of State D: 8 million.
  • Determine percentage of population below poverty line in State D: 19%.
  • Calculate percentage of population above poverty line in State D: \(100\% - 19\% = 81\%\).
  • Calculate total population above poverty line in State D: \(8 \text{ million} \times 81\% = 6.48 \text{ million}\).
  • Note the ratio of Males to Females above poverty line in State D: 5 ∶ 3.
  • Sum the ratio parts: \(5 + 3 = 8\).
  • Calculate the proportion of females above poverty line: \( \frac{3}{8} \).
  • Calculate the number of females above poverty line: \( \frac{3}{8} \times 6.48 \text{ million} = 2.43 \text{ million}\).

Revision Table: Key Calculations for State D

Description Calculation Result (million)
Total Population (State D) Given 8
% Below Poverty Line (State D) Given 19%
% Above Poverty Line (State D) \(100\% - 19\%\) 81%
Population Above Poverty Line (State D) \(8 \times 81\%\) 6.48
M:F Ratio Above Poverty Line (State D) Given 5 ∶ 3
Total Ratio Parts \(5 + 3\) 8
Fraction of Females Above Poverty Line \(3 / 8\) 3/8
Number of Females Above Poverty Line \( (3/8) \times 6.48\) 2.43

Additional Information: Understanding Population Data Tables

Population data presented in tables often involves percentages and ratios to represent different segments of the population. To interpret such tables accurately, follow these general steps:

  • Understand the Categories: Identify how the population is divided (e.g., by poverty line, gender, age group).
  • Note Percentages: Percentages indicate the proportion of a segment relative to a larger group (usually the total population or a subtotal). Remember that percentages often sum to 100% for a complete division.
  • Interpret Ratios: Ratios show the relative sizes of different sub-segments within a category (e.g., the ratio of males to females within the 'above poverty line' group). Summing the ratio parts gives the total number of relative units in that sub-segment.
  • Use Total Population: The total population figure is essential for converting percentages and ratios into absolute numbers.
  • Calculate Sub-Populations: Multiply the total population by the relevant percentage (converted to a decimal) to find the size of a percentage-based sub-population.
  • Distribute using Ratios: Once you have the size of a sub-population where a ratio is given, divide the sub-population size by the sum of the ratio parts, and then multiply by the individual ratio part to find the size of each component within that sub-population.
  • Pay Attention to Detail: Carefully read the question to understand exactly which population segment needs to be calculated (e.g., males below poverty line, females above poverty line, total population in a specific category).

These steps are crucial for solving data interpretation problems involving population distribution.

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Important Questions from Tabulation

  1. The table shows District-wise data of a number of primary school teachers posted in schools of a city.

    Study the table and answer the question:

    District

    Male teachers

    Female teachers

    East

    1650

    2375

    North

    1075

    2651

    West

    1280

    1520

    South

    1170

    1085

    Central

    690

    859


    What is the difference between the total number of male teachers in the districts East, North, West taken together and the total number of female teachers in the districts East and South?
  2. Table shows income (in Rs. ) received by 4 employees of a company during the month of December 2020 and all their income sources.

    Source

    Amit

    Suresh

    Nitin

    Varun

    Salary

    35000

    38500

    29000

    42000

    Arrears

    6000

    6300

    5000

    7500

    Bonus

    1000

    1100

    1000

    1240

    Overtime

    1800

    1950

    1400

    1500


    What is the ratio of salary of Varun to his income other than salary?
  3. Study the table and answer the question:

    Income (Rs.)

    No. of persons

    Less than 200

    12

    Less than 250

    26

    Less than 300

    34

    Less than 350

    40

    Less than 400

    50


    What is the percentage of persons earning Rs. 250 or more?
  4. The following table shows the annual profit of a company (in Rs. lakh).

    2014-2015

    2015-2016

    2016-0217

    2017-2018

    2018-2019

    625

    690

    725

    775

    815

    The period which has the maximum percentage increase in profit over the previous year is:

  5. The table given below shows the number of persons participating in a survey from 6 different states.

    States Persons 
    S1100
    S2200 
    S3400 
    S4500 
    S5600 
    S6800

    What is the ratio of number of person participating in a survey from state S3 to the number of person participating in a survey from state S4?

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