Correlations and Line of Best Fit

• Positive, strong
• Positive, weak
• Negative, strong
• Negative, weak

What type of correlation?

• Positive Correlation

• Negative Correlation

• No Correlation

What type of Correlation?

• Positive Correlation

• Negative Correlation

• No Correlation

• Positive, strong
• Positive, weak
• Negative, strong
• Negative, weak

• Positive, strong
• Positive, weak
• Negative, strong
• Negative weak

What type of Correlation?

• Positive Correlation

• Negative Correlation

• No Correlation

What is a line of best fit used for?

• To make predictions

• To make the graph look pretty

• To connect the points

• To make it look like you know what you are doing

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many pages would be in a book with 19 chapters. 

• 150 pages

• 170 pages

• 190 pages

• 210 pages

What type of correlation is when one value is increasing, then the other value is decreasing?

• postive

• negative

• none

• cannot be determined