GMAT Official Guide Quantitative Review 2019_ Book

GMAT® Official Guide 2019 Quantitative Review

10. Data Interpretation
    Occasionally a question or set of questions will be based on data provided in a table or graph. Some
    examples of tables and graphs are given below.

Example 1:

/

(in thousands)

Age Population

17 years and under 63,376

18-44 years 86,738

45 - 64 years 43,845

,65 years and over 24,054

How many people are 44 years old or younger?

Solution: The figures in the table are given in thousands. The answer in thousands can be obtained by

adding 63,376 thousand and 86,738 thousand. The result is 150,114 thousand, which is 150 ,114,000.

Example 2:

AVERAGETEMPERATUREAND

PRECIPITATION IN CITYX

Precipitation

30 (right-hand scale\

25

-Temperature

(left-hand scale)

0--'------+--- --+--+------+---'-

January April July October

12

10 .s "'

(^8) .gt i:: t
(^6) ·5..i·.c Zl 8
4 ·o 5
~u
2 0...
0
What are the average temperature and precipitation in City X during April?
Solution: Note that the scale on the left applies to the temperature line graph and the one on the right
applies to the precipitation line graph. According to the graph, during April the average temperature is
approximately 14° Celsius and the average precipitation is approximately 8 centimeters.