Physics307L F09:Schedule/Week 6 agenda/Uncertainties

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Key today: Need to assign some uncertainty to every reported measurement

Rough estimates are a great start! (and sometimes only way)

Probability density functions -> Cumulative distribution functions

Central limit theorem review

Central limit theorem part II

Mean +/- standard error of the mean

aka "standard error", "standard deviation of the mean"

From a collection of measurements

Central Limit Theorem Part II

  • Central limit theorem (I): (Last week) distribution of averaged measurments ... (II): distribution of single measurement as a result of a bunch of small, independent, random errors.

Significant figures