Analyzing Exports and Imports Data Table

The question asks us to identify the year with the minimum average import based on the provided table showing exports and imports for five countries (P, Q, R, S, T) over four years (2017, 2018, 2019, 2020). The values are given in Rs Crore.

To find the year with the minimum average import, we need to calculate the average import for each of the four years. The average import for a year is the sum of the imports for all five countries in that year divided by the number of countries, which is 5.

Calculating Average Import for Each Year

Let's calculate the total import for each year and then find the average.

Year 2017:

• Total Import = Import (P) + Import (Q) + Import (R) + Import (S) + Import (T)
• Total Import = $25 + 28 + 24 + 22 + 26 = 125$ Rs Crore
• Average Import = $\frac{\text{Total Import}}{\text{Number of Countries}} = \frac{125}{5} = 25$ Rs Crore

Year 2018:

• Total Import = Import (P) + Import (Q) + Import (R) + Import (S) + Import (T)
• Total Import = $24 + 26 + 28 + 18 + 16 = 112$ Rs Crore
• Average Import = $\frac{\text{Total Import}}{\text{Number of Countries}} = \frac{112}{5} = 22.4$ Rs Crore

Year 2019:

• Total Import = Import (P) + Import (Q) + Import (R) + Import (S) + Import (T)
• Total Import = $28 + 29 + 32 + 16 + 12 = 117$ Rs Crore
• Average Import = $\frac{\text{Total Import}}{\text{Number of Countries}} = \frac{117}{5} = 23.4$ Rs Crore

Year 2020:

• Total Import = Import (P) + Import (Q) + Import (R) + Import (S) + Import (T)
• Total Import = $22 + 26 + 28 + 23 + 21 = 120$ Rs Crore
• Average Import = $\frac{\text{Total Import}}{\text{Number of Countries}} = \frac{120}{5} = 24$ Rs Crore

Comparing Average Imports

Now, let's compare the average import values for all four years:

• Average Import 2017: 25 Rs Crore
• Average Import 2018: 22.4 Rs Crore
• Average Import 2019: 23.4 Rs Crore
• Average Import 2020: 24 Rs Crore

Comparing these values, we can see that the minimum average import is 22.4 Rs Crore, which occurred in the year 2018.

Conclusion

Based on the calculations, the year with the minimum average import is 2018.

Revision Table: Average Import Analysis

Additional Information: Data Analysis Concepts

Understanding how to work with data tables is crucial for quantitative aptitude questions. Key concepts involved in this problem include:

• Data Extraction: Carefully reading the table and extracting the required data (Import values for each country in each year).
• Summation: Adding up values (total import for a year).
• Average Calculation: Dividing the total sum by the number of entries (average import per year). The formula for average is $\text{Average} = \frac{\text{Sum of observations}}{\text{Number of observations}}$.
• Comparison: Comparing calculated values to find the minimum, maximum, or other relationships.

These skills are fundamental for solving data interpretation problems often found in exams.