501 Questions To Master GED Test Mathematics_pag318

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501 Questions to Master the GED® Mathematical Reasoning Test
 403. The correct answer is choice b. The mode is the number that 
occurs most often in a set of data. The bar graph shows that in this 
town, families having two children are most numerous. 
 Choice a is incorrect because this corresponds to families with one 
child, who are not as numerous as families having two children, 
and therefore this is not the correct answer. 
 Choice c is incorrect because this corresponds to families with 
three children, who are not as numerous as families having two 
children, and therefore this is not the correct answer. 
 Choice d is incorrect because this corresponds to families with four 
children, who are not as numerous as families having two children, 
and therefore this is not the correct answer.
 404. The correct answer is choice b. First, add up all the values: 
10 + 10 + 5 + 5 + 10 = 40. Next, divide by 5 (the number of values): 
40 ÷ 5 = 8 inches.
 405. The correct answer is 63. A box-and-whisker plot is a type of 
graphic that shows five different benchmarks within a set of data: 
the minimum value, the maximum value, the upper quartile, the 
lower quartile, and the median. The median of a data set is the 
middle piece of data—there is an equal number of data points 
above and below it. The median is represented by the bar inside 
the box of the graph, which is at 63 in this case.
 406. The correct answer is choice b. Half of the survey responses 
were “dog.” Therefore, half of the circle graph will be the dog 
sector. The entire circle graph has 360°. Half of 360° is 180°. 
The dog sector should be 180°.
 407. The correct answer is choice c. To find the mean of the num-
bers given, add the four numbers and divide by 4: 28 + 44 + 64 + 
56 = 192; 192___
4 = 48.
 408. The correct answer is choice c. Find the slope of the graph to 
find how many miles per hour Rhonda was biking. Identify two 
points on the graph to Dy__
Dx . There are several points on this graph, 
but one point is approximately (6,42) and another point is 
approximately (2,14). Therefore, Dy__
Dx = 42 – 14______
6 – 2 = 28__
4 = 7 mph. 
 Choices a and b are incorrect; even if the points are rounded 
slightly differently than described, these estimates are too low. 
 Choice d is incorrect because the estimate is too high.
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