在检查这些常见问题后，你应该能够确定导致"insufficient observations"错误的具体原因。如果问题仍然存在，你...
你可以使用STATA的命令`corr`来检查变量之间的相关性，并使用变量选择方法（例如，逐步回归）来选择最相关的变量。4. 模型设定错误：如果你的模型设定不当，也可能导致“insufficient observations”错误。希望能帮助到你！
在Stata中,"insufficient observations"(观测值不足)是一个常见的错误信息,通常表示在执行某些统计或数据分析命令时,可用的观测值数量不足以完成指定的操作。下面我将根据提供的参考信息,分点详细解答你的问题: 1. 解释"insufficient observations"在Stata中的含义 "Insufficient observations"在Stata中意味着当前的数据集...
自由度不足，可能与变量数目太多有关
2001. insufficient observations You have requested some statistical calculation, and although there are some observations, the number is not sufficient to carry out your request. 3000–3999. Mata runtime errors; see [M-2] Errors for codes. 14 error — Display generic error message and exit ...
0.85 0.423 -.1994881 .423897 > 2 smb | .0528789 .0639938 0.83 0.436 -.0984423 .204200 > 1 _cons | -.0006199 .0026987 -0.23 0.825 -.0070014 .005761 > 6 However, in the end an error occurs saying insufficient observations r(2001); and the last 2 tabels are empty due to collinearity...
Number of events with insufficient security return data: 136 Number of events with insufficient market/index factor return data: 136 Events for which the IPO (deletion) date of the event firm is later (earlier) than the first (last) day of the event window: 138 ...
样本量不够
tsappend adds observations to a time-series dataset by using the information set by tsset. This function can be particularly useful when you wish to predict out of sample after fitting a model with a time-series estimator. tsrevar is a programmer's command that provides a way to use var...
一般出现insufficient observations，是因为你的数据集中没有足够的观测值来进行计算。在豪斯曼检验中，一般...