Analyzing IT Job Vacancies Data

The question asks us to find the average number of job vacancies available in Hyderabad over two specific years: 2009 and 2019. To do this, we first need to calculate the actual number of vacancies in Hyderabad for each year using the provided percentage distribution and the total number of vacancies for that year. Then, we will find the average of these two numbers.

Let's look at the data table provided:

We are given the total number of vacancies for each year:

• Total vacancies in 2009 = 5.4 lakhs = 540,000
• Total vacancies in 2019 = 8.6 lakhs = 860,000

Calculating Hyderabad Job Vacancies in 2009

From the table, the percentage of job vacancies in Hyderabad in 2009 was 10%.

Number of vacancies in Hyderabad (2009) = 10% of Total vacancies in 2009

Using the total vacancies for 2009 (540,000):

Number of vacancies in Hyderabad (2009) $= \frac{10}{100} \times 540,000$

Number of vacancies in Hyderabad (2009) $= 0.10 \times 540,000$

Number of vacancies in Hyderabad (2009) $= 54,000$

Calculating Hyderabad Job Vacancies in 2019

From the table, the percentage of job vacancies in Hyderabad in 2019 was 8%.

Number of vacancies in Hyderabad (2019) = 8% of Total vacancies in 2019

Using the total vacancies for 2019 (860,000):

Number of vacancies in Hyderabad (2019) $= \frac{8}{100} \times 860,000$

Number of vacancies in Hyderabad (2019) $= 0.08 \times 860,000$

Number of vacancies in Hyderabad (2019) $= 68,800$

Calculating the Average Number of Vacancies in Hyderabad (2009 and 2019)

To find the average number of vacancies in Hyderabad over these two years, we add the number of vacancies from 2009 and 2019 and divide by 2 (because there are two years).

Total vacancies in Hyderabad over two years = Vacancies in Hyderabad (2009) + Vacancies in Hyderabad (2019)

Total vacancies in Hyderabad over two years $= 54,000 + 68,800 = 122,800$

Average number of vacancies in Hyderabad $= \frac{\text{Total vacancies over two years}}{2}$

Average number of vacancies in Hyderabad $= \frac{122,800}{2}$

Average number of vacancies in Hyderabad $= 61,400$

The average number of vacancies available in the city of Hyderabad in the year 2009 and 2019 is 61,400.

Revision Table: Key Data Points

Additional Information on Data Interpretation

Data interpretation questions often require understanding how to work with percentages and total values. Here are some important concepts:

• Percentage Calculation: To find a percentage of a number, convert the percentage to a decimal (divide by 100) and multiply by the number. For example, 10% of 540,000 is $\frac{10}{100} \times 540,000$.
• Average Calculation: The average (or mean) of a set of numbers is found by summing all the numbers in the set and dividing by the count of numbers in the set. In this case, we added the vacancies for two years and divided by 2.
• Units: Pay close attention to units (like lakhs) and convert them to consistent units (like absolute numbers) before performing calculations. 1 lakh equals 100,000.
• Reading Tables: Carefully read the table headers and row labels to understand what each number represents. In this table, percentages are given for each city for two different years, and the total vacancies are given separately for each year.

Practicing with different types of data tables and charts will help improve data interpretation skills for exams.