Two methods of determining carotid stenosis (narrowing of the carotid artery which supplies blood to the brain) are being compared. Method one is an invasive method that is believed to be very...

Two methods of determining carotid stenosis (narrowing of the carotid artery which supplies blood to the brain) are being compared. Method one is an invasive method that is believed to be very accurate, Method two is a noninvasive (MRI) method. One hundred patients were evaluated by these two methods with these results:

Compute coefficient Kappa.