GRE Multi-Step Data Analysis and Graphs

Question 1

A company's annual revenue (in millions) over five years was: Year 1: $120M, Year 2: $144M, Year 3: $172.8M, Year 4: $207.4M, Year 5: $248.8M. What was the approximate average percentage growth rate per year?
(A) 15%
(B) 18%
(C) 20%
(D) 22%

Accepted Answer

20%

Answer

15%

Answer

18%

Answer

22%

Question 2

A bar chart shows quarterly sales for two products:
Product A: Q1=40, Q2=55, Q3=70, Q4=85 (units)
Product B: Q1=80, Q2=70, Q3=60, Q4=50 (units)

In which quarter does the combined total first exceed 120 units?
(A) Q1
(B) Q2
(C) Q3
(D) Q4

Accepted Answer

Q2

Answer

Q1

Answer

Q3

Answer

Q4

Question 3

A pie chart shows the distribution of 360 survey respondents by preferred news source: TV = 30%, Online = 45%, Print = 15%, Radio = 10%. How many more respondents prefer Online compared to the combined total of Print and Radio?
(A) 54
(B) 72
(C) 81
(D) 90

Accepted Answer

72

Answer

54

Answer

81

Answer

90

Question 4

A line graph shows a city's population (in thousands) from 2000 to 2020 in 5-year intervals: 2000=200, 2005=230, 2010=272, 2015=306, 2020=340. Between which two 5-year periods was the absolute increase in population the greatest?
(A) 2000–2005
(B) 2005–2010
(C) 2010–2015
(D) 2015–2020

Accepted Answer

2005–2010

Answer

2000–2005

Answer

2010–2015

Answer

2015–2020

Question 5

A table shows test scores for two classes:
Class A: Mean = 78, Standard Deviation = 5, n = 30
Class B: Mean = 82, Standard Deviation = 12, n = 20

Which class had greater score variability, and by approximately what factor?
(A) Class A; variability 2.4 times greater
(B) Class B; variability 2.4 times greater
(C) Class A; variability 1.5 times greater
(D) Class B; variability 1.5 times greater

Accepted Answer

Class B; variability 2.4 times greater

Answer

Class A; variability 2.4 times greater

Answer

Class A; variability 1.5 times greater

Answer

Class B; variability 1.5 times greater

Question 6

A scatterplot shows the relationship between hours studied per week (x-axis, range 0–20) and exam score (y-axis, range 40–100). The best-fit line has the equation y = 3x + 50. A student studies 15 hours per week. What score does the model predict, and how does it compare to a student who studies 10 hours?
(A) Predicts 95; 15 points higher than the 10-hour student
(B) Predicts 95; 10 points higher than the 10-hour student
(C) Predicts 100; 20 points higher than the 10-hour student
(D) Predicts 90; 20 points higher than the 10-hour student

Accepted Answer

Predicts 95; 15 points higher than the 10-hour student

Answer

Predicts 95; 10 points higher than the 10-hour student

Answer

Predicts 100; 20 points higher than the 10-hour student

Answer

Predicts 90; 20 points higher than the 10-hour student

Question 7

A table shows monthly electricity costs for an office building:
Jan–Mar (avg): $1,200/month
Apr–Jun (avg): $900/month
Jul–Sep (avg): $1,500/month
Oct–Dec (avg): $1,050/month

What is the total annual electricity cost?
(A) $13,800
(B) $13,950
(C) $14,100
(D) $14,400

Accepted Answer

$13,800

Answer

$13,950

Answer

$14,100

Answer

$14,400

Question 8

A double bar chart compares men's and women's marathon finish times (in minutes) across 4 age groups:
Age 20–29: Men=210, Women=235
Age 30–39: Men=215, Women=242
Age 40–49: Men=225, Women=255
Age 50–59: Men=240, Women=275

In which age group is the absolute difference between men's and women's times the greatest?
(A) 20–29
(B) 30–39
(C) 40–49
(D) 50–59

Accepted Answer

50–59

Answer

20–29

Answer

30–39

Answer

40–49

Question 9

An investment portfolio had the following returns over 4 years: Year 1: +20%, Year 2: −10%, Year 3: +25%, Year 4: −5%. What was the approximate net percentage change over all 4 years?
(A) +23%
(B) +28%
(C) +30%
(D) +35%

Accepted Answer

+28%

Answer

+23%

Answer

+30%

Answer

+35%

Question 10

A histogram shows the distribution of test scores for 100 students:
50–59: 5 students
60–69: 15 students
70–79: 35 students
80–89: 30 students
90–99: 15 students

What percentage of students scored below 80?
(A) 45%
(B) 50%
(C) 55%
(D) 60%

Accepted Answer

55%

Answer

45%

Answer

50%

Answer

60%