Sem 2 Exam Review General Math Unit 2

What type of association does this graph show?

• Positive
• negative
• none
• all of the above

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

What are the coordinates of the outlier, (_,_)?

(a)  

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

Determine the predicted income if 22 hours were worked on an assembly job.

Mathematical Equivalence

ON

What type of correlation do you think there is between:
Time Spent Watching TV & Grades

• Positive correlation
• Negative correlation
• No correlation
• cannot be determined

When you check your scatter plot to see if it is straight (linear), curved, or any other pattern you are looking at (a)  

The red line represents the line of best fit for the scatter plot. How many ice cream sales are expected if the temperature is 90°?

Mathematical Equivalence

ON

Does the relationship represent direct variation?

• Yes
• No

Write the equation for the table given.

(a)