standard deviation difference can you use standard deviation to compare data? how is standard deviation determined in a plot how do you figure the standard deviation of the sd how to compare standard deviation of wavelength why do we divide standard deviation how do i find the variance of the average standard deviation between two variables with very different values? comparing mean standard deviations which of the following is not a standard deviation between variables? how to find standard deviations for different wavelengths what is the difference sd of light at 500nm how does a standard deviation of wavelength differ what does it mean to measure sd why is a standard deviation more than a standard deviation? how to find the difference in standard deviations what is the standard deviation of a wavelength in a light microscope why do i need to compare sd to mean what wavelength is a sd sd in data analysis what is the standard deviation for wavelength in nm