
| Middle of category | Frequency | Frequency % | Cummulative frequency % |
| 4.04 | 3 | 8.8 | 8.8 |
| 4.12 | 9 | 26.5 | 35.3 |
| 4.19 | 9 | 26.5 | 61.8 |
| 4.26 | 8 | 23.5 | 85.3 |
| 4.33 | 5 | 14.7 | 100.0 |
4.04373011215975...1.09861228866811 4.1150465320535...2.19722457733622 4.18636295194726...2.19722457733622 4.25767937184101...2.07944154167984 4.32899579173476...1.6094379124341
FYI: Regression on these (log-log) data points gives a line with slope of 1.27 and y-intercept of -3.47. The correlation coefficient is 0.298760569035492.
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.