确定' < x的值作为数字-地球科学堆栈交换江南电子竞技平台江南体育网页版 最近30从www.hoelymoley.com 2023 - 07 - 09 - t18:10:33z //www.hoelymoley.com/feeds/question/8809 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/8809 3 确定< x的值作为数字 阿恩 //www.hoelymoley.com/users/4784 2016 - 10 - 03 - t09:32:58z 2016 - 10 - 03 - t10:39:02z < p >我有一个大的数据集包含近十年的颗粒物测量。At the lower precision limit of the measuring instrument, there are values given like < 8. For statistical analysis however, a defined value is needed.

What is the best possible way to deal with this?

  • Replacing it as missing values?
  • Replacing it by 8 or even 7 (< 8)?
  • Assuming 0?
  • Assuming the mean value between something like 0 and 8; e. g. 4?

Or is there a better solution, maybe considering the natural background value?

EDIT: I'd like to calculate the intra-day- and intra-year distribution, as well as searching for patterns by considering wind directiond and speed.
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