Line Test Review #2

Car weight and distance traveled using a full tank of gas.  $r=-.86$  

• strong positive

• strong negative

• weak positive

• weak negative

Average fat intake per citizen of a country and average cancer rate of a country.  $r=.73$  

• strong positive

• strong negative

• weak positive

• weak negative

Score on science exam and number of words written on the essay question.  $r=.28$  

• strong positive

• strong negative

• weak positive

• weak negative

Average time spent listening to music per day and average time spent watching TV per day.  $r=-.17$  

• strong positive

• strong negative

• weak positive

• weak negative

What type of association does this graph have?

• positive 
• negative
• none
• all of the above

What type of association does this graph have?

• positive
• negative
• none
• all of the above

What type of association does this scatter plot represent?

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

Describe the relationship.

• Strong positive correlation
• Strong negative correlation
• Weak positive 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

About how many male math teachers were there in 2006?

• 15
• 30
• 35
• 45