Mettl Data Interpretation Skills 2 — Questions and Answers
Question 1: A bar chart shows monthly sales: Jan=$40K, Feb=$55K, Mar=$35K, Apr=$60K. What is the average monthly sales over these four months?
- $45,000
- $47,500 (Correct answer)
- $50,000
- $52,500
Correct answer: $47,500
Average = (40+55+35+60)/4 = 190/4 = $47,500.
Question 2: A pie chart shows market share: Company A=45%, B=30%, C=15%, D=10%. If total market revenue is $2M, how much did Company B earn?
- $300,000
- $450,000
- $600,000 (Correct answer)
- $900,000
Correct answer: $600,000
Company B's revenue = 30% × $2,000,000 = $600,000.
Question 3: A line graph shows a company's profit trend: 2020=$10M, 2021=$12M, 2022=$9M, 2023=$15M. Which year had the steepest year-over-year increase?
- 2020 to 2021
- 2021 to 2022
- 2022 to 2023 (Correct answer)
- 2019 to 2020
Correct answer: 2022 to 2023
2022 to 2023 saw a $6M increase, the largest single-year jump in the data.
Question 4: A table shows product defects per 1,000 units: Line A=8, Line B=5, Line C=12, Line D=3. What percentage of total defects come from Line C?
- 33.3%
- 37.5% (Correct answer)
- 42.9%
- 28.6%
Correct answer: 37.5%
Total defects = 8+5+12+3 = 28; Line C share = 12/28 = 42.9%.
Question 5: A scatter plot shows a strong positive correlation between advertising spend and sales. Which conclusion is most valid?
- Higher advertising always guarantees higher sales
- Advertising spend and sales tend to increase together (Correct answer)
- Sales cause advertising spend to increase
- There is no relationship between the two variables
Correct answer: Advertising spend and sales tend to increase together
A positive correlation means the two variables tend to move in the same direction, but correlation does not imply causation.
Question 6: A histogram shows employee ages grouped in 10-year bins: 20-29=15, 30-39=40, 40-49=30, 50-59=15. What proportion of employees are in their 30s?
- 25%
- 30%
- 40% (Correct answer)
- 45%
Correct answer: 40%
Total employees = 100; employees in 30-39 = 40, so 40/100 = 40%.
Question 7: A table compares Q1 and Q2 revenue for three regions: North ($500K→$600K), South ($300K→$270K), East ($400K→$440K). Which region had the highest percentage growth?
- North (Correct answer)
- South
- East
- North and East tied
Correct answer: North
North grew 20%, East grew 10%, and South declined 10%, making North the highest growth region.
Mettl Data Interpretation Skills 2
A bar chart shows monthly sales: Jan=$40K, Feb=$55K, Mar=$35K, Apr=$60K.
What is the average monthly sales over these four months?