WGU C957 APPLIED ALGEBRA FXO2 OA COMPREHENSIVE EXAM STUDY GUIDE COMPLETE QUESTIONS AND SOLUTIONS

WGU C957 APPLIED ALGEBRA FXO2 OA
COMPREHENSIVE EXAM STUDY GUIDE
COMPLETE QUESTIONS AND SOLUTIONS

●● Data
Answer: A collection of facts, which might be numbers, words,
measurements, observations or simply descriptions.


●● Variable
Answer: Something that can vary, often used in equations, and usually
represented by a letter (e.g., t for time, n for number, c for color).


●● Quantitative Variable
Answer: A changing variable that is measured on a number scale; a
variable with a numeric value.


●● Qualitative Variable or Categorical Variable
Answer: A variable that is not numeric; it describes data that fits into
categories.


●● Independent Variable
Answer: A variable that, as it changes, affects another variable (called
the dependent variable). For example, as gas (the independent variable)

, is pumped into a car's tank, the cost of the purchase (the dependent
variable) rises. The input of a function.


●● Dependent Variable
Answer: A variable that is changed by another variable (called the
independent variable). For example, when purchasing gas, the cost
(dependent variable) rises as more gas (the independent variable) is
pumped into the car's tank. Dependent variables are usually drawn on
the y-axis of a graph. The output of a function.


●● Input
Answer: A quantitative variable that is chosen to find a solution, or
output, of a function.


●● Output
Answer: A quantitative variable that is produced by a function when an
input is chosen.


●● Function
Answer: A mathematical relationship between two variables where every
input is matched with exactly one output value.


y = f(x)
Format: Dependent Variable (Independent Variable)