If you can rule out the null hypothesis, then you will make some progress towards answering the original question about whether Keith's is the most popular brand.

如果您能够排除虚假设，那么您在回答Keiths是否是最受欢迎品牌这个最初的问题上取得了一些进展。

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If you make tuning adjustments later, the baseline tells you whether you're making progress or regressing after the changes.

如果以后进行优化调整，此基线将告诉您更改之后是有所改善还是有所退化？

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If you are learning a new language you really cannot make so much progress if you do not speak the new language, whether you get it right or not.

如果你正在学习一门新的语言，如果你不说一名新的语言，你真的不能取得太大的进步，不管你做的是否正确。

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