NAME: welch_test PURPOSE: Test whether two pairs of average value of time series data is the same or. It is assumed that both distibutions of the data sets are normal distribution and have different variance. SYNTAX: result=Welch_test(x,y,sl=sl,mv=mv) KEYWORDS: sl:Significant level. The default is 0.05. mv:Missing value. If not set, Only the NaN value is dealt with. z:Statistical test value t_sl:Critical value of t-distribution in the significant level. NOTES: The test result is output as a value of 1 and 0 if the average value is the same and different, respectively. CODE: R. Hamaguchi, 13/12/2012. MODIFICATIONS: A. Shinbori, 01/05/2013. A. Shinbori, 10/07/2013. ACKNOWLEDGEMENT: $LastChangedBy: jimm $ $LastChangedDate: 2014-02-11 10:52:58 -0800 (Tue, 11 Feb 2014) $ $LastChangedRevision: 14325 $ $URL $