data_outline            Compute various descriptive statistics
detail                  Show details of an object
interval_estimate1      Two sided interval estimation of 'mu' of one
                        normal sample
interval_estimate2      Two sided interval estimation of 'mu1-mu2' of
                        two normal samples
interval_estimate3      Two sided interval estimation of 'mu' of one
                        non-normal sample with large sample size
interval_estimate4      Two sided or one sided interval estimation of
                        'mu' of one normal sample
interval_estimate5      Two sided or one sided interval estimation of
                        'mu1-mu2' of two normal samples
interval_var1           Two sided interval estimation of 'sigma^2' of
                        one normal sample
interval_var2           Two sided interval estimation of 'sigma1^2 /
                        sigma2^2' of two normal samples
interval_var3           Two sided or one sided interval estimation of
                        'sigma^2' of one normal sample
interval_var4           Two sided or one sided interval estimation of
                        'sigma1^2 / sigma2^2' of two normal samples
mean_test1              Two sided or one sided test of hypothesis of
                        'mu' of one normal sample
mean_test2              Two sided or one sided test of hypothesis of
                        'mu1' and 'mu2' of two normal samples
one_sample              Deal with one (normal) sample
one_two_sample          Deal with one and two (normal) samples
p_value                 Compute the P value
var_test1               Two sided or one sided test of hypothesis of
                        'sigma^2' of one normal sample
var_test2               Two sided or one sided test of hypothesis of
                        'sigma1^2' and 'sigma2^2' of two normal samples
