Stata中“repeated time values in sample”问题解析 1. 解释Stata中重复时间值的概念 在Stata中,“repeated time values in sample”错误通常出现在尝试设置时间序列数据或面板数据时。这个错误表明,在指定的时间变量中,存在重复的时间值,而Stata无法确定这些重复值应该如何处理,因为时间序列或面板数据要求每个时间点在...
repeated time values in sample repeated time values in sample是指在样本中出现重复的时间值。它是指样本中有多个观测值具有相同的时间,这些观测值可能表示同一个变量(例如血压)或不同变量(例如血压和体重)的测量值。重复的时间值会影响数据分析的结果,因为它们可能会导致偏差、误差和不准确的结果。
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*** . tsreport time variable not set, use -tsset varname ...- r(111); . tsset sequential_month repeated time values in sample r(451); *** How can I declare that a variable represents "time"? Yoshiro --- GANBARE! NIPPON! Yahoo! JAPAN JOC OFFICIAL INTERNET PORTAL SITE PARTNERhttp:...
。。我该怎样处理？这个不解决的话我后面的…我知道了。repeated time values in sample是有重复值，...
repeated time values within panel duplicates drop tfp year, force tsset tfp year 怎么理解cluster? 如果cluster的目的在于处理行业面对共同因素的干扰,那么对于行业的cluster和直接控制i.industry 有什么不一样的呢 cluster(group) 的含义是:假设干扰项在 group 之间不相关,而在 group 内部存在相关性。 假设group...
These designs may include repeated pre﹊ntervention as well as repeated post﹊ntervention assessments over time. The relevant measure of the difference between interventions may be, for example, the difference in means of all the post゛ssessment values in each group or the respective slopes of ...
First, we're not going to analyze any variables if we don't have a clue what's in them. The very least we'll do is inspect some histograms for outliers, missing values or weird patterns. For gender, a bar chart would be more appropriate but the histogram will do....
对于panel 数据,使用 tsset year 语句会报错(错误信息显示为:stata repeated time values in sample)。因为对于面板数据而言,需要两个维度的标识才能确定每一行观察值的位置,使用 tsset 时要求 year 值不能重复。正确的做法是 tsset id year 或 xtset id year,代码如下: webuse nlswork, clear xtset idcode year...
large; < 0.7–0.9, very large; and < 0.9–1.0, almost perfect44. In cases where the CI of a variable overlapped with small positive and negative values, the magnitude of the effect or difference was considered unclear. However, if CI did not overlap and displayed a clear separati...