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Question

The given table gives the percentage distribution of population of five states A, B, C, D, E on the basis of Education and also on the basis of sex. Study the table and answer the questions that follow

Proportion of Males and Females
StatePercentage of Educated Population(10+2 Category)(Graduate Category)
A605 ∶ 65 ∶ 3
B505 ∶ 55 ∶ 2
C355 ∶ 34 ∶ 3
D456 ∶ 54 ∶ 2
E414 ∶ 33 ∶ 2

Which state will have the highest number of female population (in the Graduate category), if the population of each state is 1 million?

The correct answer is

A

Analysing State Population Data

The question asks us to determine which state among A, B, C, D, and E has the highest number of female residents in the Graduate category, assuming each state has a total population of 1 million. We need to use the data provided in the table to calculate the number of female graduates for each state.

Interpreting the Data Table

The provided table presents information about the population distribution by education level and sex for five states. The headers and data points require careful interpretation to extract the necessary information. We will interpret the table as follows:

  • The 'Percentage of Educated Population' column gives the overall percentage of people who are educated in each state.
  • The numbers under '(10+2 Category)' and '(Graduate Category)' represent parts in a ratio that divides the total educated population into these two categories. For example, in State A, the ratio of 10+2 educated to Graduates within the educated population is 5:65.
  • The numbers under 'Proportion of Males and Females' represent parts in a ratio that divides the population within a specific education category by sex. Given the question focuses on 'female population (in the Graduate category)' and the numbers in this ratio align with the '10+2 Category' and 'Graduate Category' columns, we will interpret the first number in the ratio as the proportion of Males among Graduates and the second number as the proportion of Females among Graduates. The third number in the ratio appears extraneous for this specific calculation.

Step-by-Step Calculation for Each State

For each state, we will follow these steps to calculate the number of female graduates:

  1. Calculate the total educated population in the state.
  2. Calculate the number of graduates within the educated population based on the 10+2:Graduate ratio.
  3. Calculate the number of female graduates within the graduate population based on the Male:Female graduate ratio.

Let's perform the calculations for each state, assuming a total population of $\text{1,000,000}$ for each.

State A

  • Total Population: $\text{1,000,000}$
  • Percentage of Educated Population: $\text{60%}$
  • Total Educated Population: $\text{1,000,000} \times \frac{60}{100} = \text{600,000}$
  • Ratio of 10+2 to Graduates within Educated: $\text{5 : 65}$. Total parts: $\text{5 + 65 = 70}$.
  • Proportion of Graduates within Educated: $\frac{65}{70}$
  • Number of Graduates: $\text{600,000} \times \frac{65}{70} = \text{600,000} \times \frac{13}{14} \approx \text{557,142.86}$
  • Ratio of Male to Female among Graduates: $\text{5 : 65}$. Total parts: $\text{5 + 65 = 70}$.
  • Proportion of Female among Graduates: $\frac{65}{70}$
  • Number of Female Graduates in State A: $\left(\text{1,000,000} \times \frac{60}{100}\right) \times \left(\frac{65}{5+65}\right) \times \left(\frac{65}{5+65}\right) = \text{1,000,000} \times \text{0.60} \times \frac{65}{70} \times \frac{65}{70} = \text{600,000} \times \left(\frac{65}{70}\right)^2$
  • Number of Female Graduates in State A: $\text{600,000} \times \left(\frac{13}{14}\right)^2 = \text{600,000} \times \frac{169}{196} = \frac{101,400,000}{196} = \frac{25,350,000}{49} \approx \text{517,347}$

State B

  • Total Population: $\text{1,000,000}$
  • Percentage of Educated Population: $\text{50%}$
  • Total Educated Population: $\text{1,000,000} \times \frac{50}{100} = \text{500,000}$
  • Ratio of 10+2 to Graduates within Educated: $\text{5 : 55}$. Total parts: $\text{5 + 55 = 60}$.
  • Proportion of Graduates within Educated: $\frac{55}{60}$
  • Ratio of Male to Female among Graduates: $\text{5 : 55}$. Total parts: $\text{5 + 55 = 60}$.
  • Proportion of Female among Graduates: $\frac{55}{60}$
  • Number of Female Graduates in State B: $\left(\text{1,000,000} \times \frac{50}{100}\right) \times \left(\frac{55}{5+55}\right) \times \left(\frac{55}{5+55}\right) = \text{1,000,000} \times \text{0.50} \times \frac{55}{60} \times \frac{55}{60} = \text{500,000} \times \left(\frac{55}{60}\right)^2$
  • Number of Female Graduates in State B: $\text{500,000} \times \left(\frac{11}{12}\right)^2 = \text{500,000} \times \frac{121}{144} = \frac{60,500,000}{144} \approx \text{420,139}$

State C

  • Total Population: $\text{1,000,000}$
  • Percentage of Educated Population: $\text{35%}$
  • Total Educated Population: $\text{1,000,000} \times \frac{35}{100} = \text{350,000}$
  • Ratio of 10+2 to Graduates within Educated: $\text{5 : 34}$. Total parts: $\text{5 + 34 = 39}$.
  • Proportion of Graduates within Educated: $\frac{34}{39}$
  • Ratio of Male to Female among Graduates: $\text{5 : 34}$. Total parts: $\text{5 + 34 = 39}$.
  • Proportion of Female among Graduates: $\frac{34}{39}$
  • Number of Female Graduates in State C: $\left(\text{1,000,000} \times \frac{35}{100}\right) \times \left(\frac{34}{5+34}\right) \times \left(\frac{34}{5+34}\right) = \text{1,000,000} \times \text{0.35} \times \frac{34}{39} \times \frac{34}{39} = \text{350,000} \times \left(\frac{34}{39}\right)^2$
  • Number of Female Graduates in State C: $\text{350,000} \times \frac{1156}{1521} = \frac{404,600,000}{1521} \approx \text{266,009}$

State D

  • Total Population: $\text{1,000,000}$
  • Percentage of Educated Population: $\text{45%}$
  • Total Educated Population: $\text{1,000,000} \times \frac{45}{100} = \text{450,000}$
  • Ratio of 10+2 to Graduates within Educated: $\text{6 : 54}$. Total parts: $\text{6 + 54 = 60}$.
  • Proportion of Graduates within Educated: $\frac{54}{60} = \frac{9}{10}$
  • Ratio of Male to Female among Graduates: $\text{6 : 54}$. Total parts: $\text{6 + 54 = 60}$.
  • Proportion of Female among Graduates: $\frac{54}{60} = \frac{9}{10}$
  • Number of Female Graduates in State D: $\left(\text{1,000,000} \times \frac{45}{100}\right) \times \left(\frac{54}{6+54}\right) \times \left(\frac{54}{6+54}\right) = \text{1,000,000} \times \text{0.45} \times \frac{54}{60} \times \frac{54}{60} = \text{450,000} \times \left(\frac{9}{10}\right)^2$
  • Number of Female Graduates in State D: $\text{450,000} \times \frac{81}{100} = \text{4500} \times 81 = \text{364,500}$

State E

  • Total Population: $\text{1,000,000}$
  • Percentage of Educated Population: $\text{41%}$
  • Total Educated Population: $\text{1,000,000} \times \frac{41}{100} = \text{410,000}$
  • Ratio of 10+2 to Graduates within Educated: $\text{4 : 33}$. Total parts: $\text{4 + 33 = 37}$.
  • Proportion of Graduates within Educated: $\frac{33}{37}$
  • Ratio of Male to Female among Graduates: $\text{4 : 33}$. Total parts: $\text{4 + 33 = 37}$.
  • Proportion of Female among Graduates: $\frac{33}{37}$
  • Number of Female Graduates in State E: $\left(\text{1,000,000} \times \frac{41}{100}\right) \times \left(\frac{33}{4+33}\right) \times \left(\frac{33}{4+33}\right) = \text{1,000,000} \times \text{0.41} \times \frac{33}{37} \times \frac{33}{37} = \text{410,000} \times \left(\frac{33}{37}\right)^2$
  • Number of Female Graduates in State E: $\text{410,000} \times \frac{1089}{1369} = \frac{446,490,000}{1369} \approx \text{326,143}$

Comparison of Female Graduate Numbers

Let's compare the approximate number of female graduates for each state:

  • State A: $\text{517,347}$
  • State B: $\text{420,139}$
  • State C: $\text{266,009}$
  • State D: $\text{364,500}$
  • State E: $\text{326,143}$

Comparing these numbers, State A has the highest number of female graduates.

Conclusion

Based on the calculations using the provided data and our interpretation of the table structure, State A will have the highest number of female population in the Graduate category.

Summary of Female Graduates Calculation
State Total Pop (Million) % Educated Proportion Grad (Educated) Proportion Female (Grad) Female Graduates (Approx)
A 1 60% $\frac{65}{70}$ $\frac{65}{70}$ 517,347
B 1 50% $\frac{55}{60}$ $\frac{55}{60}$ 420,139
C 1 35% $\frac{34}{39}$ $\frac{34}{39}$ 266,009
D 1 45% $\frac{54}{60}$ $\frac{54}{60}$ 364,500
E 1 41% $\frac{33}{37}$ $\frac{33}{37}$ 326,143

Revision Table for Data Interpretation Practice

When tackling data interpretation questions involving tables and distributions, consider the following:

  • Always read the table title and column headers carefully.
  • Understand what percentages or ratios represent (e.g., percentage of total population, percentage of a subgroup, ratio of parts).
  • Pay close attention to how different columns relate to each other.
  • Break down the required calculation into smaller steps.
  • Be consistent with your interpretation across all categories or states.
  • Double-check calculations, especially when dealing with multiple proportions or percentages.

Additional Information on Population Data Analysis

Population data analysis often involves looking at distributions across various categories like age, sex, education level, occupation, etc. Such analysis helps in understanding demographic trends, planning resources, and formulating policies. Data can be presented in tables, charts, or graphs, and interpreting this data requires careful reading and calculation skills. Questions often test the ability to extract specific information from complex data presentations and perform calculations based on percentages, ratios, and proportions.

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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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