Line of best Fit

Front

What is a line of best fit?

Back

A line of best fit is a straight line that best represents the data on a scatter plot. It shows the trend of the data points.

Front

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

Back

The slope of a line of best fit is determined by the change in the y-values divided by the change in the x-values (rise over run).

Front

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

Back

A positive slope indicates that as the x-values increase, the y-values also increase, showing a positive correlation.

Front

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

Back

A negative slope indicates that as the x-values increase, the y-values decrease, showing a negative correlation.

Front

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

Back

A slope of zero indicates that there is no change in the y-values as the x-values change, suggesting no correlation.

Front

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

Back

The y-intercept is the point where the line crosses the y-axis, representing the value of y when x is zero.

Front

How can you tell if a line of best fit is accurate?

Back

A line of best fit is accurate if it closely follows the trend of the data points and minimizes the distance from the points to the line.

Front

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

Back

Front

What does it mean if there is no correlation in a scatter plot?

Back

No correlation means that there is no discernible relationship between the x and y variables; the data points are scattered randomly.

Front

How do you find the equation of the line of best fit using two points?

Back

To find the equation, calculate the slope using the two points, then use one point to solve for the y-intercept.