Directions: Study the following bar-graph carefully and answer the questions given below: average export of pearls for given period In how many years was the export above average for the given period?

Aptitude Statistics Difficulty: Easy
Choose an option
  • A
    2
  • B
    4
  • C
    5
  • D
    3

Answer

Correct Answer: 4

Explanation

### Concept & Logic First, determine the overall average for the given period. Then, count the number of data points (years) that have a value strictly greater than that average. ### Step-by-Step Solution * **Find the Average:** From the first question, we calculated the total export to be $61.1$ crores over 7 years. * $\text{Average} = \frac{61.1}{7} \approx 8.73 \text{ crores}$. * **Compare each year to the average:** - 2001: $5.2 < 8.73$ - 2002: $6.5 < 8.73$ - 2003: $7.8 < 8.73$ - 2004: $9.9 > 8.73$ (Above) - 2005: $10.8 > 8.73$ (Above) - 2006: $9.5 > 8.73$ (Above) - 2007: $11.4 > 8.73$ (Above) * **Count:** There are exactly 4 years (2004, 2005, 2006, 2007) where the export is greater than the average. ### Exam Strategy & Shortcut If you've already calculated the average in a previous question of the set, reuse that value! Simply scan the bar graph for bars crossing the imaginary line at $y = 8.73$. ### Common Pitfall Forgetting the exact average or recalculating it and making an arithmetic error. Always write down intermediate values like the average when doing set-based questions. ### Final Answer Therefore, the correct answer is **4**.
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