Must be a Rounding Error

I am a data guy.  I like tracking and analyzing data.  I've even found it to be the thing that helps me change habits.  Cycling stuck partly because I could track distance, speed, calories, and routes.  Now I have two and a half years of data and can analyze trends, and make projections. 

Look for my upcoming research paper "Way too much data about my cycling," a meta-analysis (chi-squared ratio of 3.7 and confidence interval of 0.05) in the Journal "Russell.*"

Since it worked so well to get the cycling habit to stick, I am now tracking other things in order to help me change habits.  For instance, my spreadsheet "Screaming at employees" tracks the number, intensity and duration of times I scream at one of my staff members.  And the spreadsheet "Sarcastic responses to reasonable questions" helps me  recognize all of the places where a sarcastic response could have been employed that were wasted with actual answers. 

Looking back through all of my cycling data, I calculate that I have burned 492,671 calories (plus or minus 12) since January 2013 (when I started tracking) through riding my bike.  The inter-web tells me that 3,500 calories burned equals a pound.  So, I have lost 140.8 pounds cycling.  I should be somewhere in the 70-80 pound range.  I haven't been on a scale lately, so I can't say for sure, but I think I might still be more than that. 

Perhaps I need to increase my confidence interval.


* Spring 2015 issue of "Russell" (volume 49, issue 2) includes:

Hourly cat behavior, as observed by humans  pp. 7-15
Way too much data about my cycling  pp. 16-49
Assorted haikus p. 50
Smith family metrics, quarter 1 preliminary pp. 51-107
Assorted rants and things that annoy me  pp. 108-312
Sudoku p. 313
Plus, a sneak preview of upcoming "Way too much data about me screaming at employees"

The Journal "Russell" is published quarterly.  Subscriptions accepted and individual journal volumes are available.  Prices vary by how much you are willing to pay for a detailed journal about me.