Pixel | Hue angle° |
---|---|
0 | 9 |
15 | 17 |
30 | 24 |
45 | 24 |
60 | 26 |
75 | 30 |
90 | 36 |
105 | 43 |
120 | 48 |
135 | 52 |
150 | 64 |
165 | 77 |
180 | 88 |
195 | 111 |
210 | 137 |
225 | 165 |
240 | 184 |
255 | 200 |
270 | 217 |
285 | 230 |
300 | 236 |
315 | 239 |
330 | 250 |
345 | 270 |
360 | 303 |
This section explores whether the hue angle changes linearly as one moves from red to magenta across a rainbow. The image of a rainbow was analyzed from red to purple. The hue angle for every 15th picture element (pixel) was measured and recorded. A spreadsheet with the data should be available at: http://www.comfsm.fm/~dleeling/statistics/s53/rainbow.xls
Linear Regression Statistics | |||
---|---|---|---|
Statistic or Parameter | Symbol | Equations | Excel |
Slope | b | =SLOPE(y data, x data) | |
Intercept | a | =INTERCEPT(y data, x data) | |
Correlation | r | =CORREL(y data, x data) | |
Coefficient of Determination | r2 | =(CORREL(y data, x data))^2 |