结果:找到“obs”相关内容1000个,排序为按回复时间降序,搜索更多相关帖子请点击“高级”
县级数据2000-2019(dta数据格式)
0 个回复 - 758 次查看
县级数据,非常全非常全!!!基本来源于官方,部分用县志补充了
这是sum出来的结果
sum
Variable | Obs Mean Std. Dev. Min Max
-------------+------------------------ ...
2022-6-14 18:34 - 大凡君子 - 现金交易版
var报错no observations r(2000)
2 个回复 - 1926 次查看
求助各位大佬!
. tsset t
time variable: t, 31jan2005 to 31aug2020, but with gaps
delta: 1 day
. varsoc PMI PMI_prod, maxlag(8)
no
observations
r(2000);
. dfuller PMI ...
2020-9-8 21:34 - ellen9801 - Stata专版
【独家发布】Walter Isaacson《Steve Jobs -》(mobi)
5 个回复 - 1298 次查看
Introduction:
Based on more than forty interviews with Steve J
obs conducted over two years - as well as interviews with more than a hundred family members, friends, adversaries, competitors, ...
2017-3-6 17:42 - 低调的胡哥 - 经管书评
Partially Observed Markov Decision Processes
4 个回复 - 1772 次查看
Covering formulation, algorithms, and structural results, and linking theory to real-world applications in controlled sensing (including social learning, adaptive radars and sequential detection), thi ...
2018-7-27 14:43 - nivastuli - 博弈论
回归分析错误 no observations r(2000);
21 个回复 - 37967 次查看
reg car7 SDC_Dualrole5 runup volatility $dealx $acqx $yr $industry toptier_advisor,vce(cluster gvkey)
estimates store car_1
no
observations
r(2000);
end of do-file
r(2000);
...
2014-12-15 16:14 - liuchang1989 - Stata专版
用tvdiff平行趋势检验,结果no observations
6 个回复 - 4128 次查看
参考https://mp.weixin.qq.com/s/bJ7kMK6lK21Ra_gYMeiDMA的方法做平行趋势检验代码如下:
xtset id year
generate D = (year - year0 == 0)
global xlist "age tfp le kl sp div er "
tvdiff so2 D $xlist, mo ...
2021-12-18 16:38 - 经济学小家 - Forum
求教:reg之后,显示no observations
10 个回复 - 9030 次查看
我的命令如下:
tab year,gen(yr)
tab sic2,gen(indr)
tab area,gen(ar)
reg sub_w f_absda sub_w size_w state lev_w growth_w share_w loss loss_sub yr* indr* ar*
控制了年度、行业、地区三个变量,如果只 ...
2017-7-19 21:44 - qiuer123 - Stata专版
LLC单位根检验出现no observations
10 个回复 - 9552 次查看
面板数据 n=16 T=17算长面板还是短面板LLC单位根检验出现no
observations,好像是因为自变量重复,比如GDP是17年的数据 然后16个个体都是重复这17个GDP数据 不知道如何处理 这样还能做单位根检验吗
2018-9-19 15:56 - puaote - Stata专版
【独家发布】【2015新书】Steve Jobs and Philosophy
32 个回复 - 2398 次查看
【2015新书】 Steve J
obs and Philosophy
Book 图书名称: Steve J
obs and Philosophy
Author 作者: Shawn E. Klein
Publisher 出版社:Open Court
Page 页数:288
Publishing Date 出版时间:May ...
2015-7-3 14:56 - kychan - 经管书评
Steve Jobs Bio: The Unauthorized Autobiography
7 个回复 - 1061 次查看
Steve J
obs in his own words. Get a unique insight into the mind of one of the most influential thinkers, creators and entrepreneurs of all time. The man responsible for ringing in the digital age. Leg ...
2015-1-29 23:52 - 大家开心 - 经管书评
Fano-Snowflake构型的Jacobson根分解
0 个回复 - 240 次查看
摘要翻译:
Fano-Snowflake是一种特殊的$非$单模射影晶格构型,它与最小的ternions环$R_{\diamondsuit}$(arxiv:0803.4436和0806.3153)相关联,它对$R_{\diamondsuit}$的Jac
obson根有一个有趣的划分。由自由左$R_{\di ...
2022-3-15 13:20 - 能者818 - Forum
【独家发布】Design of Observational Studies
9 个回复 - 1706 次查看
Design of Observational Studies
English | ISBN: 1441912126 | 2010 | 384 Pages | PDF | 2 MB
An
observational study is an empiric investigation of effects caused by treatments when randomized expe ...
2019-10-10 22:29 - Nicolle - winbugs及其他软件专版