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QR Challenge: Regression Line or Line of Best Fit

Created using the ClassTools QR Treasure Hunt Generator

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Teacher Notes

A. Prior to the lesson:

1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.

2. If their phone camera doesn't automatically detect and decode QR codes, ask students to

3. Print out the QR codes.

4. Cut them out and place them around your class / school.

B. The lesson:

1. Give each group a clipboard and a piece of paper so they can write down the decoded questions and their answers to them.

2. Explain to the students that the codes are hidden around the school. Each team will get ONE point for each question they correctly decode and copy down onto their sheet, and a further TWO points if they can then provide the correct answer and write this down underneath the question.

3. Away they go! The winner is the first team to return with the most correct answers in the time available. This could be within a lesson, or during a lunchbreak, or even over several days!

C. TIPS / OTHER IDEAS

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.

Questions / Answers (teacher reference)

Question

Answer

1. Find the linear regression for the following points (1,2), (2, 1), (2,4), (3, 3), (4,5), (5,4), (6,6). This will be a line in the form y=ax+b.y=.76x+1.06
2. What is another name for the linear regression line? Hint, look at yesterday's notes.Line of Best Fit.
3. Sketch a scatter plot that shows a weak, negative correlation see graph
4. In SAS5 #3, how do we find the successive ratio?Current temp/previous temp
5. In SAS3, #11 you were asked to find the total vertical distance the ball has traveled. How do you find this? Start with original height and add all of the heights which represent the drop down. Then add to that all but the starting point so that you have bounces back up also.

 


Regression Line or Line of Best Fit: QR Challenge

https://www.classtools.net/QR/decode.php?text=Find-the-linear-regression-for-the-following-points-(1,2),-(2,-1),-(2,4),-(3,-3),-(4,5),-(5,4),-(6,6).-This-will-be-a-line-in-the-form-y=ax+b.

Question 1 (of 5)

 


Regression Line or Line of Best Fit: QR Challenge

https://www.classtools.net/QR/decode.php?text=What-is-another-name-for-the-linear-regression-line?-Hint,-look-at-yesterday's-notes.

Question 2 (of 5)

 


Regression Line or Line of Best Fit: QR Challenge

https://www.classtools.net/QR/decode.php?text=Sketch-a-scatter-plot-that-shows-a-weak,-negative-correlation

Question 3 (of 5)

 


Regression Line or Line of Best Fit: QR Challenge

https://www.classtools.net/QR/decode.php?text=In-SAS5-#3,-how-do-we-find-the-successive-ratio?

Question 4 (of 5)

 


Regression Line or Line of Best Fit: QR Challenge

https://www.classtools.net/QR/decode.php?text=In-SAS3,-#11-you-were-asked-to-find-the-total-vertical-distance-the-ball-has-traveled.-How-do-you-find-this?

Question 5 (of 5)