Yesterday I wrote about the process of losing weight, but I only alluded to data sets. Let’s dig in! My data sources were the Fitbit API (for both number of steps and weight) and some weather history which I’ll explain later. This all came into through Power Query.
First of all, here is a chart showing my weight over time and then which days of the week. I usually gained weight on Sundays (our days to get together with family), Tuesdays (taco day in the café at work) and Fridays (the day we sometimes go out to eat.)
Next up are some charts showing the number of steps I took each day. The chart on the left shows how often I took a certain number of steps. The chart on the right shows the total number of steps each month. Note that we’re only halfway through June so that bar is shorter.
I fully expected to see a correlation between the number of steps I took on a given day and the amount of weight that I lost. Nope. Here’s a scatter plot showing no correlation. I think that walking is good for weight loss if you’re very overweight and you don’t move much. But there’s a point where walking is just too efficient to do much additional good.
I then started looking for other possible data correlation. Maybe the number of steps that I took was related to the temperature? Nope.
We’re in a wet part of the country so maybe the amount of rain we get in a day dictates how many steps I take? Not really. My really big days have happened when it doesn’t rain, but just because it’s dry doesn’t mean I’ll walk a lot.
In the end, I took all the various data points and ran them through Excels correlation algorithm. Nothing came out showing any real correlation. The biggest one was one of the charts you see above: the bigger the high temperature, the more steps I take, and even that was only a 0.48 correlation. That’s skewed quite a bit too because I’ve been doing a LOT more yard work lately and it has been warmer.
Even though I didn’t find a scientific way to lose weight, I did learn lots of things that AREN’T related and that’s interesting too!
The longer I live away from Indiana, the more surprised I am when I step off the plane. On this last trip, I kept notes about things that caught my eye:
I’ve been posting lots of quick, little examples showing off pieces of our Power BI offering, but now I’ve got a huge one for you. Our team recently acquired access to a HUGE data set of statistics. With the World Cup starting up, we decided to use World Cup statistics for a great demo.




Weight Loss
I don’t remember what I weighed when I graduated from college but I think it was right around 210. For most of the years, I fluctuated between 215 and 220. When I hit 227 after the holidays, I knew I needed to make a change and tackle the problem while it was still manageable. Then I kind of got into the groove and just kept going. On the last day of the diet, I woke up and weighed 205.4. Knowing I was so close, I basically starved myself and ended up losing 3 pounds that day. Ha! Obviously I gained some of it back but I declared victory. I’m going to try to keep it under 210 and I think that’s pretty feasible given the improved habits I’ve formed over the last 5.5 months.
Everyone wants to know how I did it. Before I give any answers, I’ll say that this is the diet that worked for me. This is by no means a recommendation for you or a commentary on your choices. That being said, there are two parts to the question: what did I change with my eating and how did I stay motivated?
Eating changes:
That’s pretty much it. Simple, right? There are other things like shopping on the edges of your grocery store (produce, dairy, meat) and avoiding the aisles (processed foods, etc) but in general it all goes back to eating fewer carbs and eating less food. But how did I stay motivated? I’m a geek and I my day job is all about big data, so my motivation was data!
This post is getting very long already so I’ll save the charts and graphs for another day.
A lot of friends and family have told me their losing weight right now. If you add up the weight loss from Don, Tim, Tyla and me over the last 6 months, you’d have over 100 pounds! Each of us is doing it slightly differently, but the results are all good. The “trick” is to define a sustainable plan that provides enough measureable improvement to keep you motivated. Don’t worry about following my plan or someone else’s plan exactly. Chances are, as you go through phases of weight loss, you’ll need to adjust your approach anyway. As long as you’re staying healthy and losing weight then you’re probably doing it right! (Or bonus points if you are already at your goal weight!)