Ch. 4 Practice Flashcard 2 (Algebra)

Front

What does a negative correlation in a scatter plot indicate about the relationship between x and y values?

Back

As x increases, y decreases.

Front

What type of correlation is represented when there is no clear trend in a scatter plot?

Back

No association.

Front

How can you use a trend line in a scatter plot?

Back

To predict values based on the relationship shown in the data.

Front

What does a positive linear association in a scatter plot indicate?

Back

As x increases, y also increases.

Front

What does a negative linear association in a scatter plot indicate?

Back

As x increases, y decreases.

Front

If a scatter plot shows a nonlinear association, what does that mean?

Back

The relationship between x and y does not follow a straight line.

Front

How do you predict the number of chapters in a book with 140 pages using a scatter plot?

Back

Use the trend line to find the corresponding number of chapters.

Front

If a book has 6 chapters, how can you estimate the number of pages it has using a scatter plot?

Back

Use the trend line to find the corresponding number of pages.

Front

What is the purpose of a trend line in a scatter plot?

Back

To summarize the relationship between two variables and make predictions.

Front

What is a scatter plot?

Back

A graph that shows the relationship between two quantitative variables.