History

Time	Change
2016-11-21 12:14:44+00:00	Created
2016-11-21 12:14:44+00:00	Associated with variance
2016-11-21 12:14:44+00:00	Associated with 標本分散
2016-11-21 12:14:44+00:00	Associated with 分散
2016-11-21 12:14:44+00:00	Associated with sample variance