In organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon, and thus are group 14 hydrides. Hydrocarbons, from which one hydrogen atom has been removed, are functional groups called hydrocarbyls. Because carbon has 4 electrons in its outermost shell carbon has exactly four bonds to make, and is only stable if all 4 of these bonds are used. Aromatic hydrocarbons, alkanes, cycloalkanes and alkyne-based compounds are different types of hydrocarbons. Most h
MATLAB's std function will return the standard deviation of a distribution, so we just have to divide this by the square root of the sample size to get the standard error of the mean (SEM). The standard deviation describes the spread of a sample distribution. The SEM describes certainty with which we know the mean of the underlying population based upon our sample of it. More specifically, the SEM is the theoretical standard deviation of the sample-mean's estimate of a population mean. To make the SEM more informative we can convert it to a confidence interval.
The MATLAB fft function returns the DFT y of an input vector x using a fast Fourier transform algorithm: In this call to fft, the window length m = length(x) and the transform length n = length(y) are the same.The transform length is specified by an optional second argument: In this call to fft, the transform length is n.If the length of x is less than n, x is padded with trailing zeros to increase its length to n before computing the DFT. If the length of x is greater than n, only the first n elements of x are used to compute the transform.n this call to fft, the window length m = length(x) and the transform length n = length(y) are the same. The transform length is specified by an optional second argument: In this call to fft, the transform length is n.