Line of Best Fit

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 do you determine the equation of a line of best fit?

Back

By using statistical methods like linear regression to find the slope and y-intercept.

Front

What is the slope in the equation y = mx + b?

Back

The slope (m) indicates the steepness of the line and the direction of the relationship between the variables.

Front

What is the y-intercept in the equation y = mx + b?

Back

The y-intercept (b) is the point where the line crosses the y-axis.

Front

What is the purpose of a line of best fit?

Back

To make predictions about one variable based on the value of another variable.

Front

What does it mean for a line to be an accurate line of best fit?

Back

It closely follows the trend of the data points and minimizes the distance from the points to the line.

Front

What is a scatter plot?

Back

A graph that displays values for two variables using dots to represent data points.