Designed experiments require some up front planning to be successful. You need to decide on a number of things even before you can choose the right design to use.
设计实验首先需要进行正确的计划，在开始正确设计之前，需要决定以下问题。
Designed experiments require some up front planning to be successful. You need to decide on a number of things even before you can choose the right design to use.
设计实验首先需要进行正确的计划，在开始正确设计之前，需要决定以下问题。
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