 Data, Graph Analysis on the GRE Math Test — Practice Questions - dummies

# Data, Graph Analysis on the GRE Math Test — Practice Questions

The GRE Math test contains some questions that first ask you to study data in a chart or graph, and then answer questions based on that data.

In the following practice questions, you need to refer to the supplied graphs to calculate the annual cost of electricity for an average household, and then one family’s savings based on their investment in a geothermal furnace and extra insulation.

## Practice questions

The following questions are based on these graphs. (Note: the graphs are drawn to scale.) 1. Assuming the average household uses 15 kilowatt-hours (kWh) of electricity per day to heat its home, approximately how much would the average household pay for electricity per year if located in the northeast region?

A. \$1,500

B. \$1,800

C. \$2,200

D. \$2,700

E. \$3,200

2. The Joneses live in the north central region. After paying a whopping \$4,500 on electricity last year, they installed a new geothermal furnace and extra insulation at a cost of \$8,000 total, which cut their heating bill by 35%. At this rate, about how many years will it take them to recoup their investment?

A. 16

B. 12

C. 8

D. 6

E. 3 