Alibaba Group Holding Ltd. engages in providing technology infrastructure and marketing reach. It operates through the following business segments: China Commerce, International Commerce, Local ...

之前在给北京一家药企培训时，有伙伴问如何计算不重复的个数。这是一个有代表性的问题，我整理出来以下四种方法，分别是函数法、透视表法、Power Query法和Power Pivot法，看你能不能用得上？ 案例数据 这是公司的部分销售订单表，主要涉及省份 ...

Statistical methods are mathematical formulas, models, and techniques that are used in statistical analysis of raw research data. The application of statistical methods extracts information from ...