Standard Deviation Calculator

This function computes the standard deviation of any vector or matrix.

The user inputs the matrix variable name (or a matrix) as the first input(A) and a string, either 'vector' or 'matrix' for the second input(b). This allows for any vector or matrix to be computed. In V1.1, there will be a more detailed explanation for the inner workings of the code. In V1.2, there will be an option to return the true mean of the matrix/vector input. In V1.3, there will be an option to display the number of standard deviations each value within a matrix/vector is away from the mean. In V1.4, there will be an option to graph the result in a plot, with the values being put on the standard deviation curve where they belong. In V1.5, there will be a way to do a "double" deviation for matrices. That is, it will be possible for the standard deviation for the computed standard deviations to be computed without having to repeat the code within the command window.