Data Interpretation & Analysis Flashcards

A bar chart shows five regions' sales (in $K): North=320, South=280, East=410, West=370, Central=250. Which region has sales closest to the overall average?

Answer: West

Average = (320+280+410+370+250)/5 = 326K; West at 370K is closest to 326K among the options.

A grouped bar chart shows two years of data. In Year 1, Product A sold 500 units and Product B sold 300. In Year 2, A sold 450 and B sold 420. Which product had a higher growth rate (by absolute change)?

Answer: Product B

Product A changed by −50 units; Product B changed by +120 units, so B had a higher absolute growth.

A bar chart shows monthly app downloads: Apr=12K, May=15K, Jun=18K, Jul=14K, Aug=20K. What is the month-over-month change from Jun to Jul?

Answer: −22.2%

Change = (14K−18K)/18K × 100 = −4/18 × 100 ≈ −22.2%.

A stacked bar chart shows total project hours split between Design and Development. Project Alpha: Design=40h, Dev=120h. Project Beta: Design=60h, Dev=90h. Which project has a higher proportion of Design hours?

Answer: Project Beta

Alpha: 40/160 = 25%; Beta: 60/150 = 40% — Beta has a higher design proportion.

A bar chart compares three departments' headcounts: HR=25, Sales=80, Engineering=120. If total company headcount is 300, what percentage are NOT in these three departments?

Answer: 25%

(300 − 225)/300 × 100 = 75/300 × 100 = 25% are in other departments.

A bar chart shows defect rates per 1,000 units across four factories: F1=12, F2=8, F3=15, F4=5. If each factory produces 2,000 units, how many total defects are there?

Answer: 160

Total defects = (12+8+15+5)/1000 × 2000 × 4 = 40 × 2 × 4 = 160 defects.

A bar chart shows four candidates' votes: A=4,800, B=3,600, C=2,100, D=1,500. What percentage of total votes did the top two candidates receive?

Answer: 70%

Top two (A+B) = 8,400; Total = 12,000; 8,400/12,000 = 70%.