统计是认识社会的最有用的武器之一，它具有搜集信息、提供咨询意见和实行有效监督的三大职能。随着经济的发展，准确、快捷地掌握信息在工作和学习中越来越重要。学习和掌握统计的基本原理和方法已经成为从事经济理论研究和社会管理工作的基本要求。只有掌握了统计的基本知识，才能及时取得各种统计信息，从而进行可靠的预测，进而作出正确的决策。
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