Line of Best Fit Review

Front

What is a line of best fit?

Back

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

Front

What does a positive association in a graph indicate?

Back

As one variable increases, the other variable also increases.

Front

What does a negative association in a graph indicate?

Back

As one variable increases, the other variable decreases.

Front

What does it mean if there is no association in a graph?

Back

There is no clear trend or relationship between the two variables.

Front

How can you use a line of best fit to make predictions?

Back

By extending the line and finding the corresponding value for the variable of interest.

Front

What is the purpose of a scatter plot?

Back

To display the relationship between two quantitative variables.

Front

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

Back

y = mx + b, where m is the slope and b is the y-intercept.

Front

What does the slope of a line of best fit represent?

Back

The rate of change between the two variables.

Front

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

Back

The value of y when x is 0, indicating where the line crosses the y-axis.

Front

How do you determine if a line is a good fit for the data?

Back

By checking how closely the data points cluster around the line.