Line of Best Fit Flashcard

Front

What is the equation of the line of best fit?

Back

Front

What type of association does a graph show if there is no clear trend?

Back

If a graph shows no clear trend, it indicates 'none' as the type of association.

Front

How do you identify the line of best fit in a scatter plot?

Back

The line of best fit can be identified as the line that minimizes the distance between itself and all the data points in the scatter plot.

Front

What are outliers in a scatter plot?

Back

Outliers are data points that differ significantly from other observations. For example, in a scatter plot, the point (9,1) may be an outlier.

Front

How can you predict values using a trend line?

Back

You can predict values by extending the trend line and finding where it intersects with the value of interest. For example, predicting chapters for a book with 180 pages.

Front

What does a positive association in a graph indicate?

Back

A positive association indicates that as one variable increases, the other variable also increases.

Front

What does a negative association in a graph indicate?

Back

A negative association indicates that as one variable increases, the other variable decreases.

Front

What is a scatter plot?

Back

A scatter plot is a graph that displays values for typically two variables for a set of data.

Front

What is the purpose of a line of best fit?

Back

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

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 relationship between the two variables.