Posted by **jerson** on Monday, September 15, 2008 at 10:56pm.

for a set of data the line of best fit is given by y=-.687x + 3.431 and r^2=.325. what is the correlation efficient

- trig -
**David Q**, Tuesday, September 16, 2008 at 2:42pm
The correlation coefficient (r) is just the square root of r² ... but there are two square roots of r², namely +r and -r. However, there's a clue: the line of best fit has a negative slope - so that tells you the sign of r.

## Answer This Question

## Related Questions

- trig - for a set of data, the line best fit is given by the y-0.697x + 3.431 anr...
- math - I don't understand this problem at all. It involves finding the line of ...
- math help pls pls - You suspect that the spiciness of food served in a ...
- Algebra - You use a line of best fit for a set of data to make a prediction ...
- Algebra 1 - You use a line of best fit for a set of data to make a prediction ...
- Algebra - 1.you use in line to best fit the set of data to make a prediction ...
- algebra 1 question please help - You use a line of best fit for a set of data to...
- Math - You use a line of best fit for a set of data to make a prediction about ...
- Quick math help - a set of data points has a correlation r= -0.86 your friend ...
- Algebra 1- Just one question please :) - You use a line of best fit for a set of...

More Related Questions