WGU C957 ACTUAL EXAM PAPER QUESTIONS
WITH ANSWERS GRADED A PLUS
◍ Validity of scatter plot.
Answer: Invalid if less than 10 points
◍ What does a polynomial function model?.
Answer: acceleration/deceleration
◍ Which choice is a variable? A.The number of states in the United States of
America B.The cost of your daily newspaper C.The amount a teenager
makes babysitting D.Your shoe size.
Answer: C
◍ Interpolation value.
Answer: a prediction that is inside the original range of data
◍ ideal sample size.
Answer: 10 data points or more
◍ Big Box Stores.
Answer: A very large store, typically over 50000 square feet, of plain
design, resembling a large box
◍ Input-output pairs.
Answer: The representation of an input value and an output value as an
ordered pair, written (x,y)
◍ The graph below represents the projected year-end assets, A(t), in the Social
Security trust fund in trillions of dollars, where t represents the number of
years since 2000. In the graph, t is defined between and including 0 to 50.At
which value of t is the fund increasing the most rapidly?.
Answer: About t = 0
, ◍ exponent.
Answer: A mathematical notation indicating the number of times a quantity
is multiplied by itself.
◍ Two medical operations are being compared to determine which is better for
patients. Below is a graph of the chance of infection after operation (in
percentage) for the first option (shown with a solid curve) and for the second
option (shown with a dashed curve). Both curves are shown over time since
1950, in years.As time has gone on, which is the better operation?.
Answer: Operation 1 is better because the chance of infection has dropped to
a steady 10% since around the year 2000.
◍ Strong model correlation r2 value.
Answer: 0.7-1
◍ How much can a weak model be extrapolated?.
Answer: A weak model should not be used to interpolate or extrapolate. The
relationship is not strong enough.
◍ The graph below shows the three-month average percentage year-on-year
growth for real total pay for the years 2010–2016, along with the Office for
Budget Responsibility's (OBR's) growth forecast for the years
2016–2021.What can be concluded from this graph?.
Answer: The OBR forecasts the growth will remain above 1% between 2016
and 2021.
◍ Polynomial's degree.
Answer: The value of a polynomials largest exponent
◍ When you first started at your job, you earned two weeks of vacation time a
year. After five years of employment, you earn three weeks of vacation.
After ten years of employment, you earn four weeks of vacation. What is the
dependent variable—the number of weeks of vacation or the number of
years employed? A. The number of weeks of vacation B. The number of
years employed.
Answer: A
WITH ANSWERS GRADED A PLUS
◍ Validity of scatter plot.
Answer: Invalid if less than 10 points
◍ What does a polynomial function model?.
Answer: acceleration/deceleration
◍ Which choice is a variable? A.The number of states in the United States of
America B.The cost of your daily newspaper C.The amount a teenager
makes babysitting D.Your shoe size.
Answer: C
◍ Interpolation value.
Answer: a prediction that is inside the original range of data
◍ ideal sample size.
Answer: 10 data points or more
◍ Big Box Stores.
Answer: A very large store, typically over 50000 square feet, of plain
design, resembling a large box
◍ Input-output pairs.
Answer: The representation of an input value and an output value as an
ordered pair, written (x,y)
◍ The graph below represents the projected year-end assets, A(t), in the Social
Security trust fund in trillions of dollars, where t represents the number of
years since 2000. In the graph, t is defined between and including 0 to 50.At
which value of t is the fund increasing the most rapidly?.
Answer: About t = 0
, ◍ exponent.
Answer: A mathematical notation indicating the number of times a quantity
is multiplied by itself.
◍ Two medical operations are being compared to determine which is better for
patients. Below is a graph of the chance of infection after operation (in
percentage) for the first option (shown with a solid curve) and for the second
option (shown with a dashed curve). Both curves are shown over time since
1950, in years.As time has gone on, which is the better operation?.
Answer: Operation 1 is better because the chance of infection has dropped to
a steady 10% since around the year 2000.
◍ Strong model correlation r2 value.
Answer: 0.7-1
◍ How much can a weak model be extrapolated?.
Answer: A weak model should not be used to interpolate or extrapolate. The
relationship is not strong enough.
◍ The graph below shows the three-month average percentage year-on-year
growth for real total pay for the years 2010–2016, along with the Office for
Budget Responsibility's (OBR's) growth forecast for the years
2016–2021.What can be concluded from this graph?.
Answer: The OBR forecasts the growth will remain above 1% between 2016
and 2021.
◍ Polynomial's degree.
Answer: The value of a polynomials largest exponent
◍ When you first started at your job, you earned two weeks of vacation time a
year. After five years of employment, you earn three weeks of vacation.
After ten years of employment, you earn four weeks of vacation. What is the
dependent variable—the number of weeks of vacation or the number of
years employed? A. The number of weeks of vacation B. The number of
years employed.
Answer: A
