Question

A bar chart shows sales (in lakhs) of Company X: 2010 (50), 2011 (60), 2012 (70). What is the average sales over these years?

• A. 55 lakhs
  
• B. 60 lakhs
  
• C. 65 lakhs
  
• D. 70 lakhs
  

Hint:

For bar chart averages, sum all values and divide by the number of data points.

Answer 1

The Correct Option is B

- Step 1: Extract data. Sales: 2010 = 50, 2011 = 60, 2012 = 70 (in lakhs).
- Step 2: Calculate total sales. Total = $50 + 60 + 70$. Step-wise: $50 + 60 = 110$, $110 + 70 = 180$.
- Step 3: Compute average. Number of years = 3. Average = $\frac{180}{3} = 60$ lakhs.
- Step 4: Verify. Recalculate: $50 + 60 = 110$, $110 + 70 = 180$, $\frac{180}{3} = 60$.
- Step 5: Compare with options. Options: (1) 55, (2) 60, (3) 65, (4) 70. Matches 60.
- Step 6: Cross-check. Sum is correct, and division by 3 is accurate.
- Step 7: Conclusion. Option (2) is correct.