trend lines

What is the type of association?

• Negative 
• no association
• positive 

What is the correlation between length of running start and distance of jump?

• positive:  the further you run the further you jump
• negative: the less you run the less distance of your jump
• positive: the further your running start the less your distance

Select the statement that best describes the line.

• The line is the line of best fit.
• The line is NOT a line of best fit because it does not pass through two points.
• The line is NOT a line of best fit because it does not go through the middle of the data set.
• The line is NOT a line of best fit because it does not go through the origin.

What type of correlation would you likely see with:

The amount of time spent working compared to the amount of money earned

• positive correlation

• negative correlation

• no correlation

Which scatterplot shows a negative relationship?

• 
• 
• 

What type of correlation?
The temperature outside and the amount of ice cream sales. 

• Positive correlation
• Negative correlation
• No correlation

The scatter plot below shows the number of books read by students in Mrs. Hall’s English class and their final grades. Which statement represents the best description about the line of best fit?

• The more books students read, the lower their English grade.
• The more books students read, the higher their English grade.
• The fewer books students read, the higher their English grade. 
• No relationship exists between the number of books students read and their English grades. 

Choose the scatter plot that best represents this relationship: The number of pets someone owns and the size of their shoes

• 
• 
• 
• 

What would be a good estimate for the regression (r) value?

• −1

• −0.8

• −0.4

• 0.7

What type of association does this scatter plot represent?

• positive linear association
• negative association
• no association
• nonlinear association