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Homework Statement
We needed to measure the temperature of a bucket of water using a thermometer which can be read to 0.1°C. Each group would do a single measurement, the data from five groups (including our own) was to be averaged with the uncertainty stated.
The data collected was:
19.5
19.5
19.8
20.0
20.3
(all in °C)
I'm having difficulty with calculating the uncertainty.
Homework Equations
ΔZ = ΔX + ΔY
The Attempt at a Solution
[/B]I have a feeling that I shouldn't be using this equation. Taking multiple measurements and averaging them should give better results, but... if I take more measurements then I have more uncertainties to add which will lead to a greater total error and an overall worse result.I end up with ±0.5°C which doesn't seem right.