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Graphs for CBEST Exam Study Guide (page 2)

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Updated on Mar 29, 2011

Circle Graphs

1. Which category represents approximately of the income for the Save the Caves Foundation?
1. Mailings
2. Sales
3. Thrift Shop
4. Phone
5. Other

Look for the section that takes up approximately of the circle. The answer is choice a.

Here's a different kind of circle graph question.

1. Which of the following could include a representation of expenditures of 25% and 33%?

Twenty-five percent is the same as . Thirty-three percent is close to The only choice with areas of and of the circle is choice d. Choice b is close, but the larger area seems a little large for .

Oddballs

Some graphs are just plain odd.

1. The circles above represent the dials on an electric meter. What reading do they represent?
1. 476
2. 465
3. 466
4. 486
5. 487

There are no clues whatsoever on the graphs. A look at the answer choices reveals that all are three digits and that all begin with the digit 4. It follows that each circle represents a digit. If so, the first dial has to represent 4. If the first dial represents 4, and the arrow is nearly halfway around (assuming the dials go clockwise), then half is probably 5. In that case, the last circle represents 5, which tells you your answer, choice b. It makes sense that the middle digit of 465 is 6, since the middle circle's arrow goes just a bit past the 5 mark. Questions similar to this one have appeared on the test, so it's important that you be prepared to think creatively.

All right, here's a challenge.

1. Which number best represents the speed indicated on the speedometer above?
1. 35
2. 45

It is very important to label the graph in order to answer this question. If there are 11 segments between 10 and 120, each segment must represent 10 mph. The arrow is pointing halfway between 30 and 40.Halfway between 30 and 40 is 35, so the answer is choice c.

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