Trend Lines

Front

What is a trend line?

Back

A trend line is a straight line that best represents the data on a scatter plot, showing the general direction of the data points.

Front

What does a positive correlation indicate?

Back

A positive correlation indicates that as one variable increases, the other variable also increases.

Front

What does a negative correlation indicate?

Back

A negative correlation indicates that as one variable increases, the other variable decreases.

Front

What is no correlation?

Back

No correlation means there is no apparent relationship between the two variables.

Front

How can you identify a positive correlation on a graph?

Back

A positive correlation can be identified by a trend line that slopes upwards from left to right.

Front

How can you identify a negative correlation on a graph?

Back

A negative correlation can be identified by a trend line that slopes downwards from left to right.

Front

What is the equation of a trend line in slope-intercept form?

Back

Front

What does the slope of a trend line represent?

Back

The slope of a trend line represents the rate of change between the two variables.

Front

What is the y-intercept in a trend line equation?

Back

Front

How do you determine the expected value using a trend line?

Back