Question 200-17
- The data for the 2 egories are as follows:�
- West: 150.2 thousand megawatt-hours
- Midwest: 182.6 thousand megawatt-hours
Electric companies that use wind turbines rely on weather forecasts to predict the maximum amount of power, in megawatt-hours (MWh), they can generate using wind so that they can determine how much theyll need to generate from other sources. When winds are stronger than they were forecast to be, however, the predicted maximum amount of electricity wind turbines could generate will be too low. For example, the graph shows that for the West region, the winds were blank
Which choice most effectively uses data from the graph to complete the example?
strong enough to generate about 150 thousand more MWh of electricity from wind turbines.
so weak that the electricity from wind turbines was about 175 thousand MWh less than predicted.
so weak that the electricity from wind turbines was about 150 thousand MWh less than predicted.
strong enough to generate about 175 thousand more MWh of electricity from wind turbines.
200 175 150 125 100 75 50 25 0 Electricity (in thousands of MWh) Amount
Medium-difficulty · SAT Reading & Writing · Command of Evidence — Quantitative evidence: reading tables and graphs. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.
Answer explanation
Choice A is the best answer. The claim is that when winds are stronger than forecasted, wind turbines can generate more energy than predicted. The supporting graph shows the additional amount (above the predicted amount) that the turbines generated under those conditions, with the West generating about 150 thousand additional MWh.
Choice B is incorrect. This choice doesn’t complete the example. The graph shows the additional amount of electricity that the wind turbines generated. The West bar is greater than 0, so the West generated more than the predicted amount. Choice C is incorrect. This choice doesn’t complete the example. The graph shows the additional amount of electricity that the wind turbines generated. The West bar is greater than 0, so the West generated more than the predicted amount. Choice D is incorrect. This choice misreads the graph. The graph shows us that the West (the bar on the left) generated about 150 thousand additional MWh.
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