0 Stata: If all observations unique, skip code 0 Save list of distinct values of a variable in another variable 6 Count unique values in Stata 2 All unique samples from a data set in R 1 Contracting dataset to only hold unique values for a variable 1 Stata: Removing Non-unique ...
这条命令会创建一个名为`var_count`的新变量,其中包含了数据集中的变量个数。 4.查看`var_count`变量的值,这就是你的数据集中变量个数的答案。 需要注意的是,这个计算方法只包括显式定义的变量(即在数据文件中列出的变量)。如果数据集中存在未列出的事件或对象,它们将不会被计入变量个数。此外,这个计算方法...
S458921 COUNTVALUES: Stata module to list counts of integer values across variables by Nicholas J. Cox S458920 INLIST2: Stata module to create an inlist() dummy, without the inlist() limitations by Matteo Pinna S458919 SONGBL: Stata module to search and share Stata resources and blogs by...
S458879 DICHOCT: Stata module to dichotomizes a variable at a specified centile and generates a new variable containing the dichotomized values byDirk Enzmann S458878 LIANXH: Stata module to Search and share Stata resources and blogs within Stata Command Window byLian Yu-jun & Junjie Kang & Qi...
Looking at the help of the command, it does not seem possible to store this value. Am I wrong? I am aware of other ways to compute the number of unique values in Stata, but it would be so convenient to add this feature to the codebook command. count unique stata Share Improve this ...
sample 50 在观测案例中随机选取50%的样本,其余删除 sample 50,count 在观测案例中随机选取50个样本,...
(mean)genvar2=var"2再用新变量代替原来的变量进彳亍回归处理七、内生性的检验与处理(内生性是指自变量与误差项之间有关系)1、内生性的检验:ovtestovtestIRamseyRESETtestusingpowersofthefittedvaluesofLpfmsHo:modelhasnoomittedvariablesF(3,379)=0.S4Prolb>F=0.4717看P值的大小来判断,如果P值小于0.05,则不能...
merge id using "C:\Documents and Settings\xks\桌面\1999.dta" ,unique sort ——将 1999 和 2006 的数据按照唯一的(unique)变量 id 来合并,在合并时对 id 进行排序(sort) 建议采用第一种方法。 help使用 Description summarize calculates and displays a variety of univariate summary statistics. If no ...
The idea of CEM is to temporarily coarsen each variable into substantively meaningful groups, exact match on these coarsened data and then only retain the original (uncoarsened) values of the matched data. As coarsening is a process at the heart of measurement, many analysts know how to ...
label variable x "~~~"(对变量x做标记) label values x label1(赋予变量x一组标签:label1) label define label1 1 "a1" 2 "a2"(定义标签的具体内容:当x=1时,标记为a1,当x=2时,标记为a2) 频数表: tabulate x1,sort tab1 x1-x7,sort(做x1到x7的频数表,并按照频数以降序显示行) ...