Applied Algebra - C957 Exam Questions And Answers

strong correlation {Ans: 0.7-1.0}Concave Down {Ans: The function is increasing at a decreasing rate. Or The function is decreasing at an increasing rate.}concave upward {Ans: y=x^2}Outlier {Ans: data points which are distinctly separate from the others in a data set for reasons beyond the data}coefficient of determination (r^2) {Ans: Rating of how well the function fits the real world data.}Logistic Function Equation Rate of increase {Ans: k}Logistic Function {Ans: Function with two curves and two Asympototes}The Constant e {Ans: 2.71828...}Logistic Function Equation Lower Limit {Ans: m}Function that is a strait line {Ans: linear}moderate correlation {Ans: 0.3-0.7}Concave Up {Ans: The function is increasing at an increasing rate. or The function is decreasing at a decreasing rate.}Function with curves and no Asymptote {Ans: polynomial}Inflection Point {Ans: point where concavity changes, instantaneous rate of change is the highest.}Validity of Models {Ans: SOME = Sample Size(10 or more), Outliers(Explained or removed), Model Strength and fit(r^2), Extrapolations(Strong = 50%, Moderate = 25%)}Safe Extrapolation range {Ans: Strong r value = 50% moderate r value = 25%}Concave down {Ans: y=-x^2}Logistic Function Equation Upper Limit {Ans: L+m}Logistic Function Equation Start