Calculating Enrollment Differences in Schools A, B, C

The question asks us to find the school or schools where the difference in the number of girls enrolled between the years 2021 and 2017 is the minimum. To do this, we need to look at the enrollment data for each school (A, B, and C) in the specified years and calculate the absolute difference for each school.

Here is the data table showing the year-wise enrollment of girls in schools A, B, and C:

Step-by-Step Calculation of Enrollment Differences

We will calculate the difference in the number of girls enrolled between 2021 and 2017 for each school:

• School A:
  • Enrollment in 2021 = 300
  • Enrollment in 2017 = 200
  • Difference for School A = $|300 - 200| = 100$
• School B:
  • Enrollment in 2021 = 250
  • Enrollment in 2017 = 150
  • Difference for School B = $|250 - 150| = 100$
• School C:
  • Enrollment in 2021 = 275
  • Enrollment in 2017 = 100
  • Difference for School C = $|275 - 100| = 175$

Comparing the Differences

Now, let's compare the calculated differences for each school:

• School A difference: 100
• School B difference: 100
• School C difference: 175

Looking at these values, we can see that the minimum difference is 100. This minimum difference occurs in both School A and School B.

Conclusion on Minimum Difference in Enrollment

The difference between the number of girls enrolled in the years 2021 and 2017 is minimum (which is 100) in both School A and School B.

Revision Table: Enrollment Analysis

Additional Information: Understanding Data Tables

Data tables are a common way to present structured information, making it easy to compare values across different categories or over time. In this problem, the table shows enrollment numbers by year and by school. To answer questions based on a data table, it's important to:

• Identify the rows and columns and understand what they represent.
• Locate the specific data points needed for the calculation (e.g., enrollment for a specific school in a specific year).
• Perform the required calculations (like difference, sum, average, percentage, etc.).
• Compare the results to draw conclusions or answer the question asked.

This type of question tests your ability to extract relevant information from a table and perform basic quantitative analysis.