scatter plots and trend lines

What is the type of correlation for the following scatter plot?

• Negative 
• None
• Positive 

What is the equation of the line of best fit?

• y= 2x+3

• y=3x+2

• y= $\frac{1}{2}x\ +3$

• y= $-\frac{1}{2}x\ +3$

Which of the following lines represents the line of best fit for the scatter plot?

• A
• B
• C
• D

Which scatter plot shows a linear relationship between x and y?

• Graph A

• Graph B

• Graph C

• Graph D

Which sentence describes the relationship shown on this scatter plot?

• As the temperature decreases, the visitors increase. 
• As the temperature increases, the number of visitors increases. 
• As the visitors increase, the temperature decreases. 
• No correlation

What's typing speed would you expect after 10 hours of learning?

• 24

• 30

• 15

• 35

Is this line an accurate line estimate of best fit for the data?

• Yes

• No

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 is a line of best fit used for?

• To make predictions
• To make the graph look pretty
• To connect the points

What are the coordinates of the outlier?

• (1,9)

• (9,1)

• (2,2)

• y=x