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- 223301
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- 248
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- 注册时间
- 2011-7-11
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- 2016-4-19
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2#
发表于 2011-7-11 18:42
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| Input the numbers using the Sigma+ button and then press g and decimal point (letter s in blue). That gives sample std dev. For population std dev press g and 0 (x bar in blue) and then add that to the other group of numbers (sigma +) and then press g and decimal again. |
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