Correlation is a measue of how close the line fits the points that you found in your experiment. Anyone can say whether they think the line is a good fit or not, but to measure it exactly, we use the correlation coefficient: R 2. Look at the following two plots. In the first, the line fits very well, and in the second, then line fits very poorly.
2 Answers. , Victim of celery induced tongue-numbness. The tingling in your tongue is an allergic reaction to furanocoumourans, a chemical found in celery. It is a toxic chemical produced by plants as a defense mechanism against insects and animals.
And it's very possible to puncture a nerve during tongue-splitting. If this happens, you may experience a numb tongue, which is a sign of nerve damage. The injured nerve may affect your sense of taste, or how you move your mouth. And damage to the tongue's blood vessels can cause serious blood loss.