mamooth
Diamond Member
- Aug 17, 2012
- 34,518
- 17,700
So.....if a thermocouple is able to measure to the tenth of a degree.....how is it that they are calculating temperature differences to hundredths of degrees? Enquiring minds want to know!
Standard error - Wikipedia the free encyclopedia
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SEM is usually estimated by the sample estimate of the population standard deviation (sample standard deviation) divided by the square root of the sample size (assuming statistical independence of the values in the sample):
where
s is the sample standard deviation (i.e., the sample-based estimate of the standard deviation of the population), and
n is the size (number of observations) of the sample.
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That is, as "n" get bigger, standard error goes down in proportion to the square root of "n". 100 measurements means 1/10 the standard error. 10,000 measurements means 1/100 of the standard error.
I find it astonishing a science Ph.D doesn't know such basic statistics. Any hard science requires that you know statistics inside and out. You must have been in the softest of all soft sciences.