WGU C957 APPLIED ALGEBRA OA UPDATED
ACTUAL EXAM QUESTIONS AND CORRECT
ANSWERS
◉ average rate of change.
Answer: The average rate at which one variable is changing in
relation to another variable's changing.
◉ big-box stores.
Answer: A very large store, typically over 50,000 square feet, of plain
design, resembling a large box.
◉ broadband.
Answer: High-speed Internet access that is always on and much
faster than dial-up.
◉ calculate the average rate of change.
Answer: The formula to compute an average rate of change is (y2-
y1) divided by (x2-x1).
◉ coefficient of determination.
,Answer: A statistic that measures how well a regression predictions
approximate the real data points. An r^2 of 1 indicates that the
regression prediction is a perfect fit for the data.
◉ common era.
Answer: A designation previously called "A.D.," meaning annus
domini, "year of the Lord"; the Common Era dates year 1 as the
presumed year of Jesus of Nazareth's birth.
◉ common ratio.
Answer: 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...].
◉ constant ratio.
Answer: Occurs when the numeric relationship between two
quantities - that is, how many times one number contains the second
- remains unchanged over time.
◉ data.
Answer: A collection of facts, which might be numbers, words,
measurements, observations or simply descriptions.
◉ data regression.
, Answer: 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.
◉ dependent variable.
Answer: A variable that is changed by another variable (called the
independent variable); for example, when a person is purchasing
gas, the cost (the dependent variable) rises as more gas is pumped
into a car's tank (the independent variable).
◉ equations.
Answer: A mathematical statement that two things are equal; it
consists of two expressions, one on each side of an equals sign.
◉ exponent.
Answer: A mathematical notation - a superscript - that defines the
number of times a number is multiplied by itself.
◉ exponential function.
Answer: A function that has an extremely rapid increase or decrease
in quantity in proportion to its current value; its form is f(x) = b^2.
◉ extrapolation.
ACTUAL EXAM QUESTIONS AND CORRECT
ANSWERS
◉ average rate of change.
Answer: The average rate at which one variable is changing in
relation to another variable's changing.
◉ big-box stores.
Answer: A very large store, typically over 50,000 square feet, of plain
design, resembling a large box.
◉ broadband.
Answer: High-speed Internet access that is always on and much
faster than dial-up.
◉ calculate the average rate of change.
Answer: The formula to compute an average rate of change is (y2-
y1) divided by (x2-x1).
◉ coefficient of determination.
,Answer: A statistic that measures how well a regression predictions
approximate the real data points. An r^2 of 1 indicates that the
regression prediction is a perfect fit for the data.
◉ common era.
Answer: A designation previously called "A.D.," meaning annus
domini, "year of the Lord"; the Common Era dates year 1 as the
presumed year of Jesus of Nazareth's birth.
◉ common ratio.
Answer: 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...].
◉ constant ratio.
Answer: Occurs when the numeric relationship between two
quantities - that is, how many times one number contains the second
- remains unchanged over time.
◉ data.
Answer: A collection of facts, which might be numbers, words,
measurements, observations or simply descriptions.
◉ data regression.
, Answer: 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.
◉ dependent variable.
Answer: A variable that is changed by another variable (called the
independent variable); for example, when a person is purchasing
gas, the cost (the dependent variable) rises as more gas is pumped
into a car's tank (the independent variable).
◉ equations.
Answer: A mathematical statement that two things are equal; it
consists of two expressions, one on each side of an equals sign.
◉ exponent.
Answer: A mathematical notation - a superscript - that defines the
number of times a number is multiplied by itself.
◉ exponential function.
Answer: A function that has an extremely rapid increase or decrease
in quantity in proportion to its current value; its form is f(x) = b^2.
◉ extrapolation.
