1. no = 1= 4 = 6 = Undefined

2.  Students will learn: ◦ To explore Line of Best fit in a real world setting and use the Line of Best fit to make predictions. The trend line that shows the relationship between two sets of data most accurately is called the LINE OF BEST FIT. The graphing calculator also gives you the CORRELATION COEFFICIENT r, which tells you how closely the equation models the data.

3. Are you a good judge of age?

4. Instructions  Take a look at the following celebrities.  Guess the current age (as of 2013) of each celebrity, write this number in the Guessed Age Column on your sheet.  After you have made all guesses, write down the actual ages of the celebrities in the Actual Age Column  Write a sentence describing yourself as a guesser.  Were there any factors that influenced your guess? DO NOT WRITE ON THE BACK OF YOUR PAPER!!!

19. ANSWERS ON NEXT SLIDES: Don’t peek until after you have made guesses.

35. GIRLSHeight (in) Shoe Size BOYSHeight (in)Shoe Size

36.  What is the line of best fit for the females?  If a new female student came in that was 60 inches tall, what could we estimate her shoe size to be?  If a new female student came in that was 5’3”, what could we estimate her shoe size to be?  Ms. Stallworth is 5’2. What is her estimated shoe size? ◦ Her real shoe size is 6.5, how far off was the estimate?

37.  What is the line of best fit for the males?  If a new student came in that was 66 inches tall, what could we estimate his shoe size to be?  If a new student came in that was 6’1”, what could we estimate his shoe size to be?

38. CW: Ages Activity – to turn in HW: TBD