The Correlation. 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: R2.
As the seasons change and the amount of sunlight decreases, less chlorophyll is produced, and the leaves appear less green. Chlorophyll is broken down into simpler compounds at a constant rate, so green leaf color will gradually fade as chlorophyll production slows or stops.
Of course, most of our deciduous trees lose their leaves in November and December. with a lot of overlap among the species depending on weather conditions. The leaf. color changes are caused by hormones reacting to length of daylight causing a. reduction in chlorophyll production.