August 2022
Beginner to intermediate
463 pages
9h 22m
Chinese
Content preview from Tableau Prep即学即用
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345
使用更智能的过滤
这可以防止任何可能导致错误信息决策的数据被处理并与最终用户共享。如果对过
滤后的值是否为真实记录有任何怀疑──即使它们是异常值，也要确保在你的流程
中添加检查，这样你就不会删除可能影响分析准确性的数据。
37.5
小结
本章中描述的技术可以在事情出错时提供保障，无论是由于数据输入错误还是由于
生成数据集的系统出错造成的。计算、区间连接和百分比异常检测，都采用了基于
规则的方法来帮助你过滤数据集。
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.