1|Page
WGU C957 APPLIED ALGEBRA OA EXAM LATEST 2026
ACTUAL EXAM WITH COMPLETE EXAM QUESTIONS AND
CORRECT DETAILED ANSWERS (100% VERIFIED
ANSWERS) |ALREADY GRADED A+
A statistic that measures how well a regression prediction
approximates the real data points. An r^2 of 1 indicates that the
regression prediction is a perfect fit for the data
......ANSWER......coefficient of determination
The number by which each term in a sequence is multiplied to find the
next number in the sequence; for example 4 is the common ratio for
the sequence [1, 4, 16, 64, 256...] ......ANSWER......common ratio
Occurs when the numeric relationship between two quantities- that
is, how many times one number contains the second- remains
unchanged over time ......ANSWER......Constant ratio
The process of examining data points to determine a valid equation.
"Regression" refers to bringing different data points down toward a
normal average- "regressing" them ......ANSWER......Data regression
A mathematical sentence that contains an equals sign.
......ANSWER......equation
pg. 1
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A variable that, as it changes, affects another variable (called the
response variable); for example, as a person pumps more gas into a
car's tank(the explanatory variable), the cost of the purchase rises (the
response variable) ......ANSWER......explanatory variable
A mathematical notation indicating the number of times a quantity is
multiplied by itself. ......ANSWER......exponent
a function of the form f(x) = ab^x, where a and b are real numbers
with a ≠ 0, b>0, and b ≠ 1 ......ANSWER......exponential function
the act of estimation by projecting known information
......ANSWER......extrapolation
linear function ......ANSWER......f(x)=mx+b
A very basic function ......ANSWER......f(x) = mx
A relation based on a set of inputs and a set of possible outputs where
each input is related to exactly one output ......ANSWER......function
a way to name a function that is defined by an equation
......ANSWER......function notation
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Finds the highest y-number the function goes to
......ANSWER......Global Maximum
Finds the lowest y-number the function goes to
......ANSWER......Global minimum
a horizontal line that the curve approaches but never reaches
......ANSWER......Horizontal Asymptote
A mathematical sentence that shows the relationship between
quantities that are not equivalent ......ANSWER......inequality
The point on a curve at which the curves concavity changes; also
called the point of inflection ......ANSWER......inflection point
The representation of an input value and an output value as an
ordered pair, written (x,y) ......ANSWER......Input-output pairs
A method of inserting new data points in the range of a known set of
data points ......ANSWER......Interpolation
An output produced by the interaction of several connected, or
related, inputs ......ANSWER......Interrelated causality
pg. 3
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A range of numbers that include all the real numbers between its
endpoints ......ANSWER......interval
a function that "undoes" what the original function does
......ANSWER......inverse function
uses all of the data to separate a mixed cost into its fixed and variable
components ......ANSWER......least-squares regression method
A function whose graph is a straight line. ......ANSWER......linear
function
an algorithm to find a precise line of fit for a set of data
......ANSWER......linear regression
A function that produces an s-shaped curve and contains two
asymptotes ......ANSWER......Logistic function
the observation that computing power roughly doubles every two
years. ......ANSWER......Moore's Law
pg. 4
WGU C957 APPLIED ALGEBRA OA EXAM LATEST 2026
ACTUAL EXAM WITH COMPLETE EXAM QUESTIONS AND
CORRECT DETAILED ANSWERS (100% VERIFIED
ANSWERS) |ALREADY GRADED A+
A statistic that measures how well a regression prediction
approximates the real data points. An r^2 of 1 indicates that the
regression prediction is a perfect fit for the data
......ANSWER......coefficient of determination
The number by which each term in a sequence is multiplied to find the
next number in the sequence; for example 4 is the common ratio for
the sequence [1, 4, 16, 64, 256...] ......ANSWER......common ratio
Occurs when the numeric relationship between two quantities- that
is, how many times one number contains the second- remains
unchanged over time ......ANSWER......Constant ratio
The process of examining data points to determine a valid equation.
"Regression" refers to bringing different data points down toward a
normal average- "regressing" them ......ANSWER......Data regression
A mathematical sentence that contains an equals sign.
......ANSWER......equation
pg. 1
,2|Page
A variable that, as it changes, affects another variable (called the
response variable); for example, as a person pumps more gas into a
car's tank(the explanatory variable), the cost of the purchase rises (the
response variable) ......ANSWER......explanatory variable
A mathematical notation indicating the number of times a quantity is
multiplied by itself. ......ANSWER......exponent
a function of the form f(x) = ab^x, where a and b are real numbers
with a ≠ 0, b>0, and b ≠ 1 ......ANSWER......exponential function
the act of estimation by projecting known information
......ANSWER......extrapolation
linear function ......ANSWER......f(x)=mx+b
A very basic function ......ANSWER......f(x) = mx
A relation based on a set of inputs and a set of possible outputs where
each input is related to exactly one output ......ANSWER......function
a way to name a function that is defined by an equation
......ANSWER......function notation
pg. 2
,3|Page
Finds the highest y-number the function goes to
......ANSWER......Global Maximum
Finds the lowest y-number the function goes to
......ANSWER......Global minimum
a horizontal line that the curve approaches but never reaches
......ANSWER......Horizontal Asymptote
A mathematical sentence that shows the relationship between
quantities that are not equivalent ......ANSWER......inequality
The point on a curve at which the curves concavity changes; also
called the point of inflection ......ANSWER......inflection point
The representation of an input value and an output value as an
ordered pair, written (x,y) ......ANSWER......Input-output pairs
A method of inserting new data points in the range of a known set of
data points ......ANSWER......Interpolation
An output produced by the interaction of several connected, or
related, inputs ......ANSWER......Interrelated causality
pg. 3
, 4|Page
A range of numbers that include all the real numbers between its
endpoints ......ANSWER......interval
a function that "undoes" what the original function does
......ANSWER......inverse function
uses all of the data to separate a mixed cost into its fixed and variable
components ......ANSWER......least-squares regression method
A function whose graph is a straight line. ......ANSWER......linear
function
an algorithm to find a precise line of fit for a set of data
......ANSWER......linear regression
A function that produces an s-shaped curve and contains two
asymptotes ......ANSWER......Logistic function
the observation that computing power roughly doubles every two
years. ......ANSWER......Moore's Law
pg. 4
