Hello,
Let's say I have the follwing sample (the error values correspond to the std) :
10 +- 1
15 +- 2
20 +- 3
I want to calculate the average value and the standard deviation. The mean of the [10,15,20] is 15 with std = 4.1 disregarding the individual stds.
How would I calculate the average of the sample and the std taking inti account the individual stds??
Thank you,
Andreas
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