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.
1 The green pigment hides the other colors in the leaf. 2  Leaves get less light each day in the fall and stop making food to prepare for the winter. 3  The chlorophyll (green color) fades and other colors (mainly red/yellow/orange/tan) in the leaves begin to show. The green pigment hides the other colors in the leaf. 2  Leaves get less light each day in the fall and stop making food to prepare for the winter. 3  The chlorophyll (green color) fades and other colors (mainly red/yellow/orange/tan) in the leaves begin to show.