Scatter Plots - Line of Best Fit

Front

What is a line of best fit used for?

Back

To make predictions.

Front

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

Back

It represents the relationship between two variables in a scatter plot.

Front

If a student studies for 3.5 hours, how can we predict their exam grade using a line of best fit?

Back

By using the line of best fit equation to find the corresponding grade.

Front

What is the general form of a linear equation?

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 indicate?

Back

The slope indicates the rate of change between the two variables.

Front

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

Back

The y-intercept is the value of y when x is 0.

Front

How do you determine the line of best fit from a scatter plot?

Back

By visually assessing the trend of the data points and drawing a line that best represents that trend.

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables.

Front

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

Back

It indicates that as one variable increases, the other variable also increases.

Front

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

Back

It indicates that as one variable increases, the other variable decreases.