I have another blog that doesn't suck. Archive:
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Here are the volume graduations on the tank of my WaterPik: Now what is going on here? I measured the heights of the marks in pixels in the photo:
Then I ran linear regressions. For the milliliters values, the line is $$\text{px} = 2.59\text{ ml } 419$$ with a correlation of 99.9988%. Fair enough. For the ounces values, the line is $$\text{px} = 76.5\text{ oz } 495$$ with a 99.86% correlation. That slope of !!76.5\frac{\text{px}}{\text{oz}}!! is exactly the same as the !!2.59\frac{\text{px}}{\text{ml}}!! slope in the previous line. If we correct the two suspicious ounce numbers from 16 and 19 to 15 and 18, the correlation goes up to 99.9988% but the slope increases to !!84.5\frac{\text{px}}{\text{oz}}!!. I guess the next step would be to measure the amounts but Addendum: That's the point at which I lost interest and broke off midsentence. It's now about 24 hours later and I've decided to publish what I have. Enjoy!
