Unit 7 Review

Front

What is the correlation coefficient?

Back

A statistical measure that describes the strength and direction of a relationship between two variables, ranging from -1 to 1.

Front

What does a correlation coefficient of .98 indicate?

Back

It indicates a very strong positive correlation between the two variables.

Front

What is an odd function?

Back

A function f(x) is odd if f(-x) = -f(x) for all x in the domain of f.

Front

How can you determine if a function is even, odd, or neither?

Back

Evaluate f(-x) and compare it to f(x) and -f(x). If f(-x) = f(x), it's even; if f(-x) = -f(x), it's odd; otherwise, it's neither.

Front

What is a scatter plot?

Back

A graphical representation that shows the relationship between two quantitative variables.

Front

What does a trend line in a scatter plot represent?

Back

It represents the general direction that a group of points seems to be heading, indicating the relationship between the variables.

Front

How do you use a trend line to make predictions?

Back

You can extend the trend line to estimate values for the dependent variable based on the independent variable.

Front

What is a linear equation?

Back

An equation that models a linear relationship between two variables, typically in the form y = mx + b.

Front

What does the equation 4x + 3y = $17.63 represent?

Back

It represents a linear relationship where x is the number of hamburgers and y is the number of orders of tator tots.

Front

What is positive correlation?

Back

A relationship between two variables where an increase in one variable tends to be associated with an increase in the other.