Uncertainty in Standard Deviation

laser

New Member
The 95% confidence intervals for the standard deviation (SD) of 5 measurements is approximately 0.6*SD to 2.87*SD. The measurements are laser analyses to determine the atomic composition of a solid material. If each of the 5 measurements, stated above, actually consist of the average of 50 measurements, does that change the confidence interval of the standard deviation? I can provide data if necessary.