Data Display Practice (7th)

Which graph shows a line of best fit for the scatter plot?

• Graph A
• Graph B
• Graph C
• Graph D

What type of relationship does this graph show?

• Positive
• Negative
• No Relationship
• Constant 

What type of relationship does this graph have?

• Positive 
• Negative
• No Relationship
• Constant

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 chapters would be in a book with 180 pages. 

• 12 chapters
• 15 chapters
• 18 chapters
• 21 chapters

Describe the correlation coefficient if

r = 0.90

• Positive, weak

• Positive, strong

• Negative, weak

• Negative, strong

What type of association does this graph have?

• positive 
• negative
• none
• all of the above

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

• Positive correlation
• Negative correlation
• No correlation

What type of correlation? The number of siblings you have and your weight.

• Positive correlation

• Negative correlation

• No correlation

What is the equation of the line of best fit?

• y= $-\frac{1}{2}x\ +\ 6$

• y= $\frac{1}{2}x\ +6$

• y= 6x + 2

• y = -2x +6

What is the equation of the line of best fit

• y= -2x + 10

• y= 10x+ 2

• y=2x+10

• y= 10