Semester 1 Final Review (Units 3 & 4)

Front

Solve the system of equations: y = 4x + 1 and 3x + 2y = 13

Back

(1, 5)

Front

Which r-value suggests a weak, positive relationship? r = 0.54683, r = -0.219876, r = 0.9987698, r = 0.143563

Back

r = 0.143563

Front

Which is the best trend line that represents the graph? Options: A, B, C, D

Back

C

Front

Using the trend line to figure out how many days it would take Bart to complete 10 projects is an example of ___________________.

Back

Extrapolation

Front

What is the solution to this system of equations? Options: (4, -1), (-1, 4), (-4, 1), (-4, -1)

Back

(4, -1)

Front

What is a system of equations?

Back

A set of two or more equations with the same variables.

Front

Define interpolation in the context of data analysis.

Back

Estimating a value within the range of a set of known values.

Front

Define extrapolation in the context of data analysis.

Back

Estimating a value outside the range of a set of known values.

Front

What does a positive r-value indicate in correlation?

Back

A positive r-value indicates a direct relationship where as one variable increases, the other also increases.

Front

What does a negative r-value indicate in correlation?

Back

A negative r-value indicates an inverse relationship where as one variable increases, the other decreases.