- #1
zehkari
- 22
- 3
Homework Statement
I need to calculate the error of an average value (N for diffraction grating).
My results were 4 different average angles. With which I calculated their uncertainty using std.
Using equation (1), I found the number of lines per meter (N) with a known wavelength (λ) and the correct diffraction order (p).
However, I now need an average of those 4 N values to find a mean N value.
What is my uncertainty on the mean N value, considering sin(θ) used in the equation is based off 4 results with their uncertainty?
I understand how to propagate error. I am just confused with how to take the 4 propagated errors based off the uncertainty of the angles to find an error on the mean N.
Homework Equations
(1) sin(θ)=pNλ
The Attempt at a Solution
My only idea would be adding all 4 propagation errors on N to give the total error for the average N?
Any help would be great, many thanks!