Scatter Plot & Line of Best Fit Practice

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional grid.

Front

What does the line of best fit represent in a scatter plot?

Back

The line of best fit represents the trend of the data points in a scatter plot, indicating the general direction of the relationship between the variables.

Front

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

Back

The equation of a line in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you determine the slope of a line?

Back

The slope of a line is determined by the change in y divided by the change in x (rise over run) between two points on the line.

Front

What does a positive slope indicate in a scatter plot?

Back

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

Front

What does a negative slope indicate in a scatter plot?

Back

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

Front

What does it mean if a scatter plot has no association?

Back

If a scatter plot has no association, it means there is no discernible pattern or relationship between the two variables.

Front

What is the purpose of the line of best fit?

Back

The purpose of the line of best fit is to summarize the relationship between the variables and to make predictions based on the data.

Front

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

Back

You can use the line of best fit to make predictions by finding the corresponding y-value for a given x-value on the line.

Front

What does it mean if data points are above the line of best fit?

Back

If data points are above the line of best fit, it indicates that the actual values are higher than the predicted values from the line.