置信区间为 总体参数(Mu and Sigma)提供了一个可接受的范围。你得到的任何样本统计量因样本之间存在差异，因此真正的总体或过程的参数也有所不同.
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mu and sigma
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以上为机器翻译结果，长、整句建议使用 人工翻译 。
MasterCard Advisors , a division of MasterCard has announced a partnership and investment in Mu Sigma , a high-end analytics firm in Chicago and India.
FORBES: Mastercard Advisors Partners with, Invests In, Big Data Specialist Mu Sigma
Mu Sigma specializes in advanced analytical tools and services with a team of more than 2, 500 highly educated professionals, most of them in India.
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