Mettl Data Interpretation 3 — Questions and Answers
Question 1: A stacked bar chart shows revenue by region: North contributes 35%, South 25%, East 20%, West 20%. If East's revenue is $400K, what is the total revenue?
- $1.6M
- $1.8M
- $2.0M (Correct answer)
- $2.2M
Correct answer: $2.0M
East = 20% = $400K, so total = $400K / 0.20 = $2.0M.
Question 2: A data table shows profit margins: Product X=15%, Product Y=22%, Product Z=8%. Product X sells 500 units at $200 each. What is Product X's total profit?
- $12,000
- $13,500
- $15,000 (Correct answer)
- $16,500
Correct answer: $15,000
Revenue = 500×$200 = $100,000; Profit = 15% × $100,000 = $15,000.
Question 3: A histogram shows employee ages in bins: 20-29 (30 employees), 30-39 (50), 40-49 (40), 50-59 (20), 60+ (10). What is the modal age group?
- 20-29
- 30-39 (Correct answer)
- 40-49
- 50-59
Correct answer: 30-39
The modal class is 30-39, which has the highest frequency of 50 employees.
Question 4: Two overlapping circles in a Venn diagram show: Circle A (only) = 30, Circle B (only) = 25, Overlap = 15. How many elements are in A or B (union)?
- 55
- 60
- 70 (Correct answer)
- 75
Correct answer: 70
Union = 30 + 25 + 15 = 70 (elements exclusive to A + exclusive to B + shared).
Question 5: A table shows call center metrics: Average Handle Time (AHT) dropped from 8 min to 6 min while customer satisfaction rose from 72% to 85%. What is the most accurate interpretation?
- Lower AHT always decreases satisfaction
- AHT reduction here coincided with a satisfaction increase (Correct answer)
- Satisfaction improvement caused AHT to drop
- The two metrics are unrelated
Correct answer: AHT reduction here coincided with a satisfaction increase
The data shows both trends occurring together; we can only state correlation, not causation.
Question 6: A line chart shows stock prices for 5 days: Mon=$50, Tue=$55, Wed=$52, Thu=$58, Fri=$60. What is the net percentage change from Monday to Friday?
- 10%
- 15%
- 20% (Correct answer)
- 25%
Correct answer: 20%
Net change = ($60-$50)/$50 × 100 = 20%.
Question 7: A table compares two years of expenses. Year 1 total: $500K. Year 2 total: $650K. Year 2 travel expenses = $130K, which is 20% of Year 2 total. What was the percentage increase in total expenses year-over-year?
- 20%
- 25%
- 30% (Correct answer)
- 35%
Correct answer: 30%
Increase = ($650K - $500K) / $500K × 100 = 30%.
Mettl Data Interpretation 3
A stacked bar chart shows revenue by region: North contributes 35%, South 25%, East 20%, West 20%.
If East's revenue is $400K, what is the total revenue?