Line of Best Fit Flashcard

Front

What is the y-intercept?

Back

The y-intercept is the point where a line crosses the y-axis. It represents the value of y when x is 0.

Front

What type of association (correlation) does a positive correlation indicate?

Back

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

Front

What is a negative correlation?

Back

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

Front

What does 'no correlation' mean?

Back

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

Front

What is the purpose of a line of best fit?

Back

A line of best fit is used to make predictions based on the data points in a scatter plot.

Front

How can you determine the slope of a line of best fit?

Back

The slope of a line of best fit can be determined by calculating the change in y over the change in x (rise over run).

Front

What does a slope of 0 indicate in a line of best fit?

Back

A slope of 0 indicates that there is no change in y as x changes, meaning the relationship is constant.

Front

How do you interpret the slope of a line of best fit?

Back

The slope indicates the rate of change between the two variables; a steeper slope means a greater rate of change.

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two variables using dots to represent data points.

Front

What does it mean if a scatter plot shows a cluster of points?

Back

A cluster of points in a scatter plot indicates a strong relationship between the two variables.