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Accuracy vs Precision
Oct. 9th, 2008 09:52 amI'm into the study, but they still haven't told me whether I'll be in the experiment or control group.
For my starting visit yesterday, they gave me a home scale to weigh myself with daily. Today: 191.8lb. My old scale that I'd been logging daily with: 195.0lb. The new scale promises 0.1 pound precision. Apparently the study scientists have also tested it for accuracy. I once tested my old scale by weighing myself and then weighing myself holding a various combinations of 10lb and 15lb dumbbells. It got the right difference up at that range (on probably not-too-precise exercise weights), but maybe the whole time it was off by 3.2lb.
For my starting visit yesterday, they gave me a home scale to weigh myself with daily. Today: 191.8lb. My old scale that I'd been logging daily with: 195.0lb. The new scale promises 0.1 pound precision. Apparently the study scientists have also tested it for accuracy. I once tested my old scale by weighing myself and then weighing myself holding a various combinations of 10lb and 15lb dumbbells. It got the right difference up at that range (on probably not-too-precise exercise weights), but maybe the whole time it was off by 3.2lb.
