age 1 of 45
WGU D128 Mathematics for Elementary Educators
Exam
relative frequency .......Answer.........A way to approximate a
percentage by dividing the number of times an event occurred in
an experiment by the total number of trials.
fair .......Answer.........In probability, this refers to a situation in
which all outcomes are equally likely. It is the opposite of
biased.
law of large numbers .......Answer.........A law in probability that
as the number of experiments gets larger, the relative frequency
of an outcome will converge on the theoretical probability.
permutation .......Answer.........The number of unique ordered
possibilities for a certain situation.
,age 2 of 45
empirical probability .......Answer.........A probability that is
calculated by conducting trials or experiments and recording the
results.
experiment .......Answer.........In probability, an experiment or trial
is a procedure that can be done repeatedly and has a well
defined set of possible outcomes.
probability model .......Answer.........A mathematical
representation of a random phenomenon.
sampling with replacement .......Answer.........When an outcome
can be selected more than once.
outcome .......Answer.........A single possible result of an
experiment.
,age 3 of 45
sample space .......Answer.........The set of possible outcomes for
an experiment.
What is the length of the missing leg in a right triangle with a
hypotenuse of 25 in. and a leg of 9 in.? .......Answer. ..... 4√34
in.
A scalene Triangle has .......Answer.........no congruent sides
Find the distance between points (0, 4) and (15, 0) by applying
the Pythagorean theorem. .......Answer. . 15.52
A circle has a diameter of 12.8 ft. What is the area of this
circle? .......Answer.........128.61 ft.
line .......Answer.........A straight one-dimensional figure that
extends infinitely in both directions.
, age 4 of 45
perpendicular .......Answer.........Describes lines intersecting each
other to form a 90 degree, or right, angle.
circle .......Answer.........The set of all points that are equidistant
from a point.
radius .......Answer.........The distance from the center of a circle or
sphere to any point on the outer edge.
isosceles trapezoid .......Answer.........Quadrilateral with one pair
of parallel opposite sides (the bases) and another pair of equal
opposite sides.
interior angle .......Answer.........An angle inside a shape between
two joined sides.
square .......Answer.........A quadrilateral with four equal sides
and four 90° angles.
WGU D128 Mathematics for Elementary Educators
Exam
relative frequency .......Answer.........A way to approximate a
percentage by dividing the number of times an event occurred in
an experiment by the total number of trials.
fair .......Answer.........In probability, this refers to a situation in
which all outcomes are equally likely. It is the opposite of
biased.
law of large numbers .......Answer.........A law in probability that
as the number of experiments gets larger, the relative frequency
of an outcome will converge on the theoretical probability.
permutation .......Answer.........The number of unique ordered
possibilities for a certain situation.
,age 2 of 45
empirical probability .......Answer.........A probability that is
calculated by conducting trials or experiments and recording the
results.
experiment .......Answer.........In probability, an experiment or trial
is a procedure that can be done repeatedly and has a well
defined set of possible outcomes.
probability model .......Answer.........A mathematical
representation of a random phenomenon.
sampling with replacement .......Answer.........When an outcome
can be selected more than once.
outcome .......Answer.........A single possible result of an
experiment.
,age 3 of 45
sample space .......Answer.........The set of possible outcomes for
an experiment.
What is the length of the missing leg in a right triangle with a
hypotenuse of 25 in. and a leg of 9 in.? .......Answer. ..... 4√34
in.
A scalene Triangle has .......Answer.........no congruent sides
Find the distance between points (0, 4) and (15, 0) by applying
the Pythagorean theorem. .......Answer. . 15.52
A circle has a diameter of 12.8 ft. What is the area of this
circle? .......Answer.........128.61 ft.
line .......Answer.........A straight one-dimensional figure that
extends infinitely in both directions.
, age 4 of 45
perpendicular .......Answer.........Describes lines intersecting each
other to form a 90 degree, or right, angle.
circle .......Answer.........The set of all points that are equidistant
from a point.
radius .......Answer.........The distance from the center of a circle or
sphere to any point on the outer edge.
isosceles trapezoid .......Answer.........Quadrilateral with one pair
of parallel opposite sides (the bases) and another pair of equal
opposite sides.
interior angle .......Answer.........An angle inside a shape between
two joined sides.
square .......Answer.........A quadrilateral with four equal sides
and four 90° angles.
