One and Two Samples Using Only an R Function

摘要

We create an R function one_two_sample() which deals with one and two (normal) samples. For one normal sample x, the function reports descriptive statistics, plot, interval estimations and hypothesis testings of the means and variances of x. For one abnormal sample x, the function reports descriptive statistics, plot, two sided interval estimation of the mean of x. For two normal samples x and y, the function reports descriptive statistics, plot, interval estimations and hypothesis testings of the means and variances of x and y, respectively. It also reports interval estimations and hypothesis testings of the difference of the means of x and y and the ratio of the variances of x and y, tests whether x and y are from the same population, finds the correlation coefficient of x and y if they have the same length. The function is in a tailormade R package OneTwoSamples which is available on CRAN.