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Wii Fit: Fun With Linear Regression!

July 13, 2008 | 1 Minute Read

So I’ve been playing Wii Fit for a while. One of the really neat things about the program (it’s not really a game, right?) is that it automagically graphs your progress as you lose weight. It’s pretty nice getting positive feedback when you put hard work into something. I think this is one of the very well thought-out features of Wii Fit.

Anyway, I was looking at my weight going down and figured I’d do some rudimentary linear regression on it. I’m pretty much just eyeballing it because I don’t want to throw stuff into R or Matlab. It seems as though I’ll reach a threshold (away from Obesity) around the end of August. Though I’m basing this on a linear fit. It’s possible that the actual plot will end up looking more like a power law since it’s easier to lose weight when you’re way overweight. The point is, I’m losing weight and it’s nice to try and see when I might reach my goals.

I also think it’s worth noting that Wii Fit seems to overestimate my weight. Because when I use my bathroom scale my weight is always lower than what Wii Fit says. I guess I could adjust the “weight of clothing” but since I always pick the same thing I don’t want to mess with the consistency.

Now, if Nintendo had programmed some regression in automatically, I’d have to give it a 10/10 for science! But for now I’m pretty happy with just the graph functionality. It’s fun seeing large local fluctuations with a general downward trend. Now, if I can only keep this graph from turning into a parabola like with my DDR Diet…