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.
1 A common symptom of dry mouth is a tingling sensation in the tongue. Dry mouth can be caused by certain illnesses and some medications. Talk to your doctor if you are concerned about dry mouth symptoms.  Numbness and tingling in the lips and tongue can sometimes be a side effect of a drug.