Copying regression statistic to next slide

Questions
1

Hi all,

I am getting my students to remove data of their choosing from a table in a graph. This will change the regression line + statistics.

On the next slide I want to ask the question ‘The value of r of you regression line was ${r} … interpret what this means…’ As the data removed will change (student to student) I need to reference the r value from the previous graph somehow but can’t see any previous threads that suggest how this might work… Coding that works for other variables doesn’t seem to work:
r = g3.number(“r”)
Activity I am working on is here. Slides 5 and 7 are the relevant ones…

Many thanks,

Paul

2

For linear relationships, there is a correlation function built into the calculator. This will give you the correlation coefficient that can be used for another screen.
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If you want to round this value, wrap the round function around correlation function. You could use this for your a and b variables as well.
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2 Likes
3

Thank you for this! It nows does exactly what I want it to.