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北京天演融智软件有限公司（科学软件网）前身是北京世纪天演科技有限公司，成立于2001年，专注为国内高校、科研院所和以研发为主的企事业单位提供科研软件和服务的国家。
Random without replacement: Observations are chosen at random and may occur only once in the sample
Co-Design with Our Users: Analyzing Performance in a CATA Experiment and Further Developing CATATIS with Givaudan
Our R&D and Engineering teams are always working to bring new ergonomic functionalities and innovative statistical tools to XLSTAT. Many of these developed or improved features come from user requests or as a solution to a specific use case. The CATATIS feature is one of them.
To meet these different situations, several methods have been proposed.
You will benefit from data preparation and visualization tools, parametric and nonparametric tests, and modeling methods, such as ANOVA, regression, generalized linear models, or nonlinear models.
科学软件网主要提供以下科学软件服务：
1、软件培训服务：与国内大学合作，聘请业内人士定期组织软件培训，截止目前，已成功举办软件培训四十多期，累计学员2000余人，不仅让学员掌握了软件使用技巧，加深了软件在本职工作中的应用深度，而且也为**业人士搭建起了沟通的桥梁；
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