GRE Multi-Step Data Analysis and Graphs 2

Question 1

A bar graph shows quarterly sales: Q1 = $40,000, Q2 = $52,000, Q3 = $48,000, Q4 = $60,000. What is the percent increase from Q1 to Q4?

Accepted Answer

50%

Answer

The increase is ($60,000 - $40,000)/$40,000 = $20,000/$40,000 = 50%.

Question 2

A pie chart of 360 students shows 25% study French. A separate bar graph shows 40% of French students also study German. How many students study both French and German?

Accepted Answer

36

Answer

French students = 25% of 360 = 90, and 40% of 90 = 36 study both.

Question 3

A line graph shows temperature rising steadily from 50°F at 6 AM to 74°F at noon. Assuming a constant rate, what is the temperature at 9 AM?

Accepted Answer

62°F

Answer

Over 6 hours the rise is 24°F, so 4°F/hour; at 9 AM (3 hours later) it is 50 + 12 = 62°F.

Question 4

A scatterplot's trend line has equation y = 3x + 5, where x is hours studied and y is test score. If a student studies 7 hours, what predicted score does the line give?

Accepted Answer

26

Answer

Substituting x = 7 gives y = 3(7) + 5 = 26.

Question 5

A table lists revenue by region: North $120K, South $80K, East $150K, West $50K. What fraction of total revenue comes from the East region?

Accepted Answer

3/8

Answer

Total = $400K, and East $150K / $400K = 3/8.

GRE Practice Test

GRE Practice Test

GRE Multi-Step Data Analysis and Graphs 2