GRE Multi-Step Data Analysis and Graphs 3

Question 1

A boxplot shows a median of 70, first quartile 55, and third quartile 85. What is the interquartile range (IQR)?

Accepted Answer

30

Answer

IQR = Q3 - Q1 = 85 - 55 = 30.

Question 2

A stacked bar chart shows a month's budget: rent 40%, food 25%, transport 15%, other 20%. If total spending is $2,500, how much is spent on food and transport combined?

Accepted Answer

$1,000

Answer

Food + transport = 40% of $2,500 = $1,000.

Question 3

A line graph shows a stock at $80 on Monday, dropping 10% Tuesday, then rising 10% Wednesday. What is the Wednesday price?

Accepted Answer

$79.20

Answer

Tuesday = $72, and a 10% rise gives $72 × 1.10 = $79.20.

Question 4

A frequency table shows scores: 10 students scored 'A', 15 'B', 20 'C', 5 'D'. If one student is chosen at random, what is the probability of choosing a 'B' student?

Accepted Answer

0.30

Answer

Total = 50 students, and 15/50 = 0.30.

Question 5

A double-line graph shows Product X selling 200 units and Product Y selling 150 units in January. In June, X sells 250 and Y sells 300. What is the change in the combined total from January to June?

Accepted Answer

+200 units

Answer

January total = 350, June total = 550, so the change is +200 units.

GRE Practice Test

GRE Practice Test

GRE Multi-Step Data Analysis and Graphs 3