
| ln( Box width ) | ln( RMS Fluctuation ) |
| 0.60 | 1.16 |
| 0.70 | 1.26 |
| 0.78 | 1.34 |
| 0.85 | 1.37 |
| 0.90 | 1.42 |
| 0.95 | 1.45 |
| 1.00 | 1.51 |
| 1.04 | 1.48 |
| 1.08 | 1.58 |
| 1.11 | 1.63 |
| 1.18 | 1.65 |
| 1.20 | 1.69 |
| 1.23 | 1.73 |
| 1.28 | 1.77 |
| 1.32 | 1.79 |
| 1.36 | 1.85 |
| 1.40 | 1.87 |
| 1.43 | 1.92 |
| 1.46 | 1.92 |
| 1.51 | 1.98 |
| 1.54 | 2.02 |
| 1.58 | 2.03 |
| 1.61 | 2.07 |
| 1.65 | 2.12 |
| 1.69 | 2.18 |
| 1.73 | 2.20 |
| 1.77 | 2.22 |
| 1.81 | 2.27 |
| 1.85 | 2.29 |
| 1.88 | 2.36 |
| 1.92 | 2.39 |
| 1.96 | 2.42 |
| 2.00 | 2.44 |
| 2.03 | 2.45 |
| 2.07 | 2.48 |
| 2.11 | 2.52 |
| 2.15 | 2.50 |
| 2.18 | 2.53 |
| 2.22 | 2.53 |
| 2.26 | 2.56 |
| 2.29 | 2.57 |
| 2.33 | 2.61 |
| 2.37 | 2.62 |
| 2.41 | 2.63 |
| 2.45 | 2.64 |
| 2.48 | 2.71 |
| 2.52 | 2.73 |
| 2.56 | 2.77 |
| 2.60 | 2.77 |
| 2.63 | 2.82 |
| 2.67 | 2.82 |
| 2.71 | 2.85 |
| 2.75 | 2.82 |
| 2.78 | 2.92 |
| 2.82 | 2.96 |
| 2.86 | 2.96 |
| 2.90 | 3.02 |
| 2.94 | 3.02 |
| 2.97 | 3.05 |
| 3.01 | 3.07 |
| 3.05 | 3.16 |
| 3.09 | 3.14 |
| 3.12 | 3.12 |
| 3.16 | 3.12 |
| 3.20 | 3.19 |
| 3.24 | 3.28 |
| 3.27 | 3.27 |
| 3.31 | 3.31 |
| 3.35 | 3.29 |
| 3.39 | 3.31 |
| 3.42 | 3.28 |
| 3.46 | 3.36 |
| 3.50 | 3.39 |
| 3.54 | 3.42 |
| 3.57 | 3.42 |
| 3.61 | 3.45 |
| 3.65 | 3.54 |
| 3.69 | 3.50 |
| 3.73 | 3.49 |
| 3.76 | 3.53 |
| 3.80 | 3.60 |
| 3.84 | 3.67 |
| 3.88 | 3.76 |
| 3.91 | 3.79 |
FYI: Regression on these DFA data points gives a line with slope of 0.74 and y-intercept of 0.84. The correlation coefficient is 0.995821773559207.
The slope values may be interpreted as follows:
| Slope | Interpretation |
|---|---|
| .5 | Totally random sequence; no self-similarity |
| 1.0 | Power-law (1/f) sequence; self-similarity at many scales |
| 1.5 | Brownian motion (random walk) |
This program is a version of demo.cgi by Sanford Morton, heavily modified by Michael Grobe to include data input, categorization, and regression. The program uses Perl module Chart::Plot, written by Sanford Morton and downloaded from www.speakeasy.org, to draw plots.