Hi folks, apologies if this is in the wrong forum. I'm a new undergrad physics student and I'm having trouble figuring out how to 'do' error analysis. (I had a quick look through some similar posts here & am still none the wiser.) I'll use my recent lab experiment on Resonance in a Tube as an example; feel free to skip the background given below if it's not necessary. Background: The aim of the experiment was to find the speed of sound in air, using a function generator & loudspeaker attached to a hollow tube with plunger. We took several measurements at 1kHz, 500Hz and 3kHz and worked out the wavelengths of the standing wave formed in the tube. We noted the measurement error for each measurement we took. We averaged the values we got at each of those frequencies and then determined a speed v for each frequency, and averaged those to get v = 344m/s, using v = fλ. Now I'm at the 'error analysis' part and a bit stuck. There are instructions in our handbook on how to find the average value, standard deviation, standard deviation of the average value and use Gauss' error law. Do I need to use all of these techniques? Also, to use Gauss' error law, I need to have a value Δf and Δλ and I'm not sure how to find those. Are they a combination of the measurement inaccuracy (eg ±0.1cm when using a meter stick, like we were) with the standard deviation of the average measurement? Or just the standard deviation alone? Here is the form of Gauss' error law I'm fairly sure I'm supposed to use: ΔV/V = √[(Δf/f)2+(Δλ/λ)2] Thanks a million in advance for any help, this is something I've been having trouble with for weeks & the helproom in my college hasn't been able to see me about it yet.