Math Praxis Practice Test (5003)
Six children have collected these amounts in their piggy banks: $10, $33, $45,
$23, $1, and $68. What is the median of their savings?
a. $28
b. $33
c. $23
d. $66 - CORRECT ANSWER-answer: a. $28
Rearrange the numbers in increasing order: 1, 10, 23, 33, 45, and 68. The
median of a sequence of numbers is the middle value. Since there are six
numbers, there are two values in the middle 23 and 33 and, therefore, the
median is the average of these values. The median is 28.
What do you call questions that have more than one possible answer, and
require collection of data to reach a valid answer?
a. probing questions
b. statistical questions
c. non-statistical questions
b. rhetorical questions - CORRECT ANSWER-answer: b. statistical questions
A non-statistical question just has one answer that does not change. A rhetorical
question does not require to be answered. Probing questions require elaboration
of the topic.
The weights of twenty trouts were recorded: 12, 13, 13, 14, 14, 14, 14, 15, 15,
15, 16, 16, 16, 17, 17, 17, 17, 17, 18, and 34. If the weight of the heaviest trout is
removed from the data, which statistical parameter will drastically change?
a. range
b. median
c. mean
d. mode - CORRECT ANSWER-answer: a. range
Since the mean, median, and mode are measures of center, outliers will not have
much effect. The range will be greatly affected since it measures the difference
between the highest and lowest.
, Which of the following is the term used for the intersection of the x-axis and the
y-axis?
a. quadrant
b. coordinate
c. abscissa
d. origin - CORRECT ANSWER-answer: d. origin
Abscissa refers to the x-axis, while ordinate refers to the y-axis. Quadrant refers
to the four sections in the Cartesian plane that are divided by the two axes.
What shape is obtained by drawing the polygon whose vertices are the points of
coordinates (2,0), (0,2), (-2,0), and (0,-2)?
a. square
b. rectangle
c. parallelogram
d. trapezoid - CORRECT ANSWER-answer: a. square
The polygon determined by the four points is a square
What quadrant or axis does the point A= (0, -2) belong to?
a. first quadrant
b. second quadrant
c. y-axis
d. third quadrant - CORRECT ANSWER-answer: c. y-axis
The point A=(0,-2) lies on the negative direction of the y-axis. Therefore, it does
not belong to any quadrant.
A ten-sided dice is thrown three times. What is the probability that the die will fall
on the same number?
a. 2/1000
b. 3/100
c. 3/1000
d. 1/1000 - CORRECT ANSWER-answer: d. 1/1000
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