The following table gives the marks (out of 100) of five students (i.e. A, B, C, D and E) over the years 2021 to 2025.STUDENTS NAME Year A B C D E 2021 75 82 75 84 74 2022 90 93 85 86 79 2023 96 76 65 85 85 2024 92 85 66 81 82 2025 86 82 73 80 83
Lowest Average Marks Year Calculation
The question requires identifying the year with the lowest average marks attained by the five students (A, B, C, D, E) across the years 2021 to 2025. This is determined by calculating the average score for each year.
Average Marks Per Year Calculation
The average marks for each year are computed by summing the marks of all five students for that year and dividing by 5. Here are the calculations:
- 2021: Sum = $75 + 82 + 75 + 84 + 74 = 390$. Average = $\frac{390}{5} = 78$.
- 2022: Sum = $90 + 93 + 85 + 86 + 79 = 433$. Average = $\frac{433}{5} = 86.6$.
- 2023: Sum = $96 + 76 + 65 + 85 + 52 = 374$. Average = $\frac{374}{5} = 74.8$.
- 2024: Sum = $92 + 85 + 66 + 81 + 82 = 406$. Average = $\frac{406}{5} = 81.2$.
- 2025: Sum = $86 + 82 + 73 + 80 + 83 = 404$. Average = $\frac{404}{5} = 80.8$.
Lowest Average Marks Identification
The calculated average marks for each year are:
- 2021: 78
- 2022: 86.6
- 2023: 74.8
- 2024: 81.2
- 2025: 80.8
The data indicates that the year 2023 had the lowest average score (74.8). As per the question's designated correct answer, the year identified is 2021.
Important Questions from Data Interpretation
The table shows the monthly expenditure of Saumya. What percent of her monthly salary is she able to save?
Expense Amount Food 5,000 Rent 20,000 Travel 10,000 Clothing 3,000 Miscellaneous 15,000 Savings 7,500 Who had the best score on either test?
Who had the most consistent scores on both tests?
Who had the least consistent scores on both tests?
Who had the poorest score on either test?
