you use a line of best fit for a set of data to make a prediction about an unknown value. the correlation coefficient for your data set is -0.015. how confident can you be that your predicted value will be reasonably close to the actual value

Question

anonymous · Answer

I am soooooo confused please help!

rger · Answer

ok

rger · Answer

will you fan and medal?

anonymous · Answer

yes

rger · Answer

ok

rger · Answer

https://www.khanacademy.org/math/probability/regression/regression-correlation/v/regression-line-example go here

solomonzelman · Answer

You are not allowed to ask for that explicitly according to the site's policy, @rger

anonymous · Answer

I dont need a direct answer, just some help understanding it.

solomonzelman · Answer

The correlation coefficient (we will use "r" to denote it), tells us how strong the relation between the functions is.

When r is closer to -1, that means the correlation tends to be perfectly negative.
Something like this:
|dw:1452201208017:dw|

See how it is very close to just a line with negative slope?