结果:找到“Multi level analysis”相关内容127个,排序为按回复时间降序,搜索更多相关帖子请点击“高级
Multilevel Analysis Techniques and Applications 2ed.
186 个回复 - 18363 次查看 2010年版 回复+2币 高清电子版PDF **** 本内容被作者隐藏 **** Preface viii 1. Introduction to Multilevel Analysis 1 1.1 Aggregation and disaggregation 2 1.2 Why do we need special multilevel ...2012-3-25 12:29 - lyxxxz - 经管书评
【独家发布】【2016新书】Multilevel Network Analysis for the Social Sciences
34 个回复 - 4495 次查看 如果喜欢该文档,欢迎订阅【2016新书】文库,http://bbs.pinggu.org/forum.php?mod=collection&action=view&ctid=3187 图书名称:Multilevel Network Analysis for the Social Sciences: Theory, Methods and App ...2016-7-28 20:11 - 牛尾巴 - winbugs及其他软件专版
多水平模型Multilevel Statistical Model analysis in SAS
2 个回复 - 1155 次查看 多水平模型Multilevel Statistical Model analysis in SAS 多水平模型Multilevel Statistical Model analysis in SAS 多水平模型Multilevel Statistical Model analysis in SAS 多水平模型Multilevel Statist ...2020-8-5 20:50 - lotus_sss - 现金交易版
Multilevel Analysis Techniques and Applications
1 个回复 - 1094 次查看 Multilevel Analysis Techniques and Applications Third Edition Joop J. Hox, Mirjam Moerbeek,Rens van de Schoot2021-4-25 08:33 - 杨柳笛 - 经济统计专版
[Lecture Notes]Multilevel Mediation Analysis Andrew Hayes
4 个回复 - 1738 次查看 **** 本内容被作者隐藏 ****2016-6-2 07:27 - Nicolle - winbugs及其他软件专版
【大数据系列】Power Analysis of Trials with Multilevel Data
82 个回复 - 4316 次查看 2015年最新教材,降价出售期已过,想要随时跟踪最新好书,请点击头像下方“加关注”。关注成功后,查看这里即可:三步走把千本好书“一网打尽”!。 [相关阅读] 【经典教材系列】(资料汇总帖,附链接,持续 ...2016-6-25 22:03 - wwqqer - 数据分析与数据挖掘
The Handbook of Multilevel Theory, Measurement, and Analysis
4 个回复 - 1754 次查看 【作者(必填)】Stephen E. Humphrey James M. LeBreton 【文题(必填)】The Handbook of Multilevel Theory, Measurement, and Analysis 【年份(必填)】2019 【全文链接或数据库名称(选填)】https://www. ...2022-3-9 21:56 - bxmzone - 求助成功区
The Handbook of Multilevel Theory, Measurement, and Analysis
2 个回复 - 833 次查看 【作者(必填)】Stephen E. Humphrey, James M. LeBreton 【文题(必填)】The Handbook of Multilevel Theory, Measurement, and Analysis 【年份(必填)】2019 【全文链接或数据库名称(选填)】https://www.jsto ...2022-3-2 22:06 - bxmzone - 求助成功区
【下载】Data Analysis Using Regression and Multilevel-Hierarchical Models~2006
68 个回复 - 25832 次查看 Data Analysis Using Regression and Multilevel/Hierarchical Models (Paperback) Andrew Gelman (Author), Jennifer Hill (Author) Editorial Reviews Review "Data Analysis Using Regression and Mult ...2010-6-10 03:17 - kxjs2007 - 计量经济学与统计软件
Multilevel Analysis: An Introduction to Basic and Advanced Multilevel Modeling
7 个回复 - 2443 次查看 Multilevel Analysis: An Introduction to Basic and Advanced Multilevel ModelingTom Snijders, Roel Bosker “Overall, Snijders and Bosker provide an accessible and readable text on the subject ...2018-8-20 23:36 - larrymh - 计量经济学与统计软件
Handbook of Advanced Multilevel Analysis (高清)
4 个回复 - 2370 次查看 论坛上有个500币,是不是太贵了。 我好不容易弄了个,很便宜的分享给大家。 希望大家多多支持!2015-4-9 16:47 - pcjoshua - HLM专版
英文原版 Multilevel Analysis for Applied Research
8 个回复 - 2632 次查看 我们UIUC商院资料库拖过来的原版 Bickel, Multilevel Analysis for Applied Research2011-3-3 12:51 - lincwing - LISREL、AMOS等结构方程模型分析软件
[下载]Handbook of Multilevel Analysis
33 个回复 - 6056 次查看 Handbook of Multilevel AnalysisBy Jan de Leeuw, Erik Meijer (Editors)Publisher: Springer Number Of Pages: 494 Publication Date: 2007-12-28 ISBN-10 / ASIN: 0387731830 ISBN-13 / EAN: 9780387731834 Bindi ...2008-2-20 18:48 - aili1000100 - 计量经济学与统计软件
Multilevel Mediation Analysis using Mplus
5 个回复 - 3578 次查看 General Multilevel SEM Framework for Assessing Multilevel Mediation http://bus.sysu.edu.cn/uploads/Preacher,%20Zyphur,%20&%20Zhang,%202010%281%29.pdf2014-1-12 04:46 - Nicolle - HLM专版
Multilevel Logistic Regression Analysis using MLwiN
2 个回复 - 2290 次查看 Journal of Data Science 9(2011), 93-110Multilevel Logistic Regression Analysis Applied to Binary Contraceptive Prevalence DataMd. Hasinur Rahaman Khan and J. Ewart H. ShawUniversity of WarwickAbstract ...2013-12-19 06:42 - Lisrelchen - HLM专版
[下载]Handbook of Advanced Multilevel Analysis
33 个回复 - 6598 次查看 This new handbook is the definitive resource on advanced topics related to multilevel analysis. The editors assembled the top minds in the field to address the latest applications of multilevel mo ...2014-1-10 12:11 - Trevor - HLM专版
Multilevel Business Processes: Modeling and Data Analysis
14 个回复 - 2714 次查看 Multilevel Business Processes: Modeling and Data Analysis Christoph G. Schuetz examines the conceptual modeling aspects of multilevel business processes without neglecting the implementation aspe ...2015-12-1 17:35 - exuan1991 - 金融学(理论版)
如何用R做multi-level Wilcoxon analysis
2 个回复 - 1237 次查看 数据是这样的: Disease2018-8-17 00:46 - pengchy - R语言论坛
Gelman的新书:Data Analysis Using Regression and MultilevelHierarchical Models
31 个回复 - 8332 次查看 Gelman的新书Data Analysis Using Regression and Multilevel/Hierarchical ModelsPreface xix1 Why? 11.1 What is multilevel regression modeling? 11.2 Some examples from our own research 31.3 Motivations fo ...2009-3-26 16:38 - prestige - 计量经济学与统计软件
[好书不贵]Data Analysis Using Regression and MultilevelHierarchical Models
12 个回复 - 4258 次查看 Data Analysis Using Regression and Multilevel/Hierarchical Models Data Analysis Using Regression and Multilevel/Hierarchical Models is a comprehensive manual for the applied researcher who w ...2010-7-13 09:04 - okxjg - SPSS论坛
Data Analysis Using Regression and Multilevel/Hierarchical Models
29 个回复 - 8910 次查看 1 Why? 1 1.1 What is multilevel regression modeling? 1 1.2 Some examples from our own research 3 1.3 Motivations for multilevel modeling 6 2 Concepts and methods from basic probability and stati ...2009-8-29 16:46 - chenguanghua - R语言论坛
社会科学研究中的实用多水平分析Multilevel Analysis for Applied Research
226 个回复 - 17741 次查看 社会科学研究中的实用多水平分析 Robert Bickel, "Multilevel Analysis for Applied Research: It's Just Regression! (Methodology In The Social Sciences)" English | 2007-03-20 | ISBN: 159385191X | 384 pag ...2012-3-24 08:50 - onceonce - 经管书评
Multilevel Logistic Regression Analysis of Contraceptive Binary Data
1 个回复 - 1395 次查看 Product Details [*]Paperback: 76 pages [*]Publisher: VDM Verlag (April 28 2010) [*]Language: English [*]ISBN-10: 3639180461 [*]ISBN-13: 978-3639180466 [*]Product Dimensions: 15 x 0.5 x 22 cm ...2015-11-19 06:09 - Nicolle - winbugs及其他软件专版
What Is the Difference Between Multilevel Analysis and Panel Data Analysis?
0 个回复 - 1118 次查看 I'm wondering if there are any differences between multilevel[/backcolor] models and panel models that give practical advantages of one over the other? I understand that panel models and multilevel[/ ...2014-1-7 09:33 - Statachen - HLM专版
Multilevel Analysis for Longitudinal Data?
5 个回复 - 1923 次查看 I have data from a randomized trial with data collected at 7 time points (1 at baseline, and 6 more after intervention began). The intervention data are time structured- collected every 3 months ...2014-1-9 11:08 - Nicolle - HLM专版
How to Conduct Dynamic Multilevel Analysis using R?
0 个回复 - 1111 次查看 I'm currently conducting a study involving sequential analysis of dyadic data, in which actor's goals at Time 1 predict partner's goals at time 2. I have four types of categorical goal outcomes (self ...2014-1-7 09:16 - Statachen - HLM专版
David Atkins: Lecture Notes-Applied Multilevel Analysis
0 个回复 - 1418 次查看 2013-12-15 13:32 - MLwiN_Chen - HLM专版
Boliang Guo:Multilevel path analysis University of Birmingham
1 个回复 - 1221 次查看 Boliang Guo:Multilevel path analysis University of Birminghamhttp://www.geocities.com/guobl/2013-11-30 04:58 - Trevor - HLM专版
Is it possible to conduct a multilevel regression analysis with this design?
0 个回复 - 1358 次查看 Dear all I am exploring alternatives to analyse a data set and would appreciate some feedback and/or suggestions. In an experience sampling exploratory study we asked participants to report on a s ...2014-1-4 09:04 - Statachen - HLM专版
Assessing the potential of multilevel models for the geographical analysis of ho
0 个回复 - 632 次查看 【作者(必填)】Bullen, Nina Isobel. 【文题(必填)】Assessing the potential of multilevel models for the geographical analysis of house price variation 【年份(必填)】1998 【全文链接或数据库名称 ...2017-11-13 18:14 - nash - 文献求助专区
Putting Escalation of Commitment in Context: A Multi-level Review and Analysis
1 个回复 - 796 次查看 【作者(必填)】 Dustin Sleesman[/backcolor], [/backcolor]Anna Lennard[/backcolor], [/backcolor]Gerry McNamara[/backcolor] and [/backcolor]Donald Conlon[/backcolor] 【文题(必填)】 Putting Escalation ...2017-11-5 23:06 - 宁静的城np - 求助成功区
[精品图书下载]Multilevel Analysis 2nd EditionTom Snijders,Roel Bosker
13 个回复 - 6264 次查看 Back to the multilevel page of Tom SnijdersData Sets[hr] [*]The main data set, used in Chapters 4-10 (where missings are excluded): [*]mlbook2_r_dat.zip, zipped file containing the file named mlbo ...2013-11-25 08:29 - Lisrelchen - HLM专版
Multilevel Analysis using Stata
17 个回复 - 8808 次查看 Multilevel and Mixed-Effects Modeling(Statistics with Stata 12) Mixed-effects modeling is basically regression analysis allowing two kinds of effects: fixed effects, meaning intercepts and slopes mea ...2013-12-19 02:38 - Nicolle - HLM专版
Hox的多层线性模型书籍:Multilevel Analysis - Techniques and Applications (2002)
5 个回复 - 3536 次查看 Multilevel Analysis - Techniques and Applications (2002) Hox J. 多层线性模型(HLM)中比较经典的教材之一 补充内容 (2013-6-1 02:57): 如果你是一个初学者,可以登录Hox的个人网站,上面提供了该书前 ...2013-1-22 03:35 - szfdtz - LISREL、AMOS等结构方程模型分析软件
Lecture Notes: Multilevel Analysis/Hierarchical Linear Modeling
8 个回复 - 2244 次查看 Multilevel Analysis/Hierarchical Linear Modeling Edpsych/Psych/Stat 587 C.J. Anderson Fall 2013 http://courses.education.illinois.edu/edpsy587/2013-12-14 02:31 - Trevor - HLM专版
[原创]Multilevel Analysis Techniques and Applications
24 个回复 - 8089 次查看 <p>Multilevel Analysis :Techniques and Applications </p><p>这是一本不可多得的多水平模型好书,作者Joop Hox 是著名的多水平模型专家,本书从理论和几种软件的应用方面进行了详细的阐述,希望对大家的学 ...2008-10-24 22:45 - chengducdc - 计量经济学与统计软件
Software to Compute Sampling Weights for Multilevel Analysis
8 个回复 - 1192 次查看 Software to Compute Sampling Weights for Multilevel Analysis [*]Kim ChantalaDan BlanchetteC. M. SuchindranCarolina [*]Population Center, UNC at Chapel Hill [*]Last Update: April 28, 2011 ...2016-7-9 08:09 - Nicolle - winbugs及其他软件专版
Multilevel Analysis:Techniques and Applications
6 个回复 - 2085 次查看 Social and behavioral research is often about data with a hierarchical or multilevel structure. Multilevel modeling used to be only for specialists. However, in the past decade, multilevel anal ...2013-11-25 06:32 - Lisrelchen - HLM专版
Strategies for Model Building in Multilevel Data Analysis
3 个回复 - 1874 次查看 I'm wondering if there exits some strategies for model building in multilevel analysis like what we have in regression analysis. For instance, in regression analysis we can use enter, stepwise, forwar ...2014-1-12 06:12 - SASCHEN - HLM专版
[下载]Multilevel Analysis-An Introduction Basic and Advanced Multilevel Model
6 个回复 - 3680 次查看 Snijdersl_Bosker-Multilevel_Analysis__An_Introduction_to_Basic_and_Advanced_Multilevel_Modeling-Sage_Publications_Ltd(1999)2014-1-12 19:23 - lbnous - HLM专版
[疑难杂症]How Can I Control for Time in Multilevel Panel Analysis?
1 个回复 - 1914 次查看 I am planning to conduct a twolevel panel analysis with observations (level 1) nested within respondents (level 2). In total, there are six measurement occassions nested in 200 respondents. It seems ...2014-5-29 23:04 - Nicolle - HLM专版
《Applied Multilevel Analysis》
4 个回复 - 2943 次查看 [hr]2008-7-16 01:02 - ctx5518 - HLM专版
[Research Paper]A Multilevel Path Analysis of the Relationship
2 个回复 - 730 次查看 A Multilevel Path Analysis of the Relationship Between Physical Activity and Self-Rated Health in Older Adults **** 本内容被作者隐藏 ****2016-6-2 07:36 - Nicolle - winbugs及其他软件专版
R Package for Multilevel Analysis
27 个回复 - 5991 次查看 mvctm: Multivariate Variance Components Tests for Multilevel Data Permutation tests for variance components for 2-level, 3-level and 4-level data with univariate or multivariate responses.Downloads: ...2014-7-7 23:26 - Nicolle - HLM专版
Applied multilevel analysis by J.J. Hox (PDF, free download)
4 个回复 - 2795 次查看 I do not know why I cannot upload the file.2005-10-24 06:40 - 3670 - 计量经济学与统计软件
Software for Multilevel Analysis - UCLA Statistics
0 个回复 - 923 次查看 Software for Multilevel Analysis - UCLA Statistics file:///C:/Users/Karl/Downloads/Software%20for%20Multilevel%20Analysis.pdf2016-2-1 09:59 - Lisrelchen - HLM专版
首发国外指定教材:Snijders 著的 Multilevel analysis
15 个回复 - 5201 次查看 Snijders, T. & Bosker, R. (1999). Multilevel analysis: Anintroduction to basic and advanced multilevel modeling. 1ed, Thousand Oaks, CA: Sage. 简洁明了由浅入深的经典之作,仍是美国某些统计系的指 ...2010-8-29 11:11 - frxafnk - 计量经济学与统计软件
Multilevel Analysis of Activity and Travel Patterns
3 个回复 - 572 次查看 【作者(必填)】 Konstadinos Goulias , Tae-Gyu Kim 【文题(必填)】 Multilevel Analysis of Activity and Travel Patterns: Accounting for Person- and Household-Specific Observed and Unobserved Effects S ...2016-1-5 00:06 - ticket1988 - 求助成功区
R Package for Multilevel Factor Analysis?
1 个回复 - 1633 次查看 I was wondering if there is any R package capable to do multilevel factor analysis?2014-5-5 23:14 - Nicolle - HLM专版
Multilevel Analysis using MLwiN - Tutorial
0 个回复 - 1796 次查看 **** 本内容被作者隐藏 **** Main Contents Chapter 1: Random Intercept and Random Slope Models using MLwiN Chapter 2: Residuals Chapter 3: Graphical Procedure Chapter 4:Contextual Effects Chap ...2013-12-2 04:06 - Statachen - HLM专版
Converting string IDs into numbers in a multilevel analysis using R
4 个回复 - 1552 次查看 I have two data sets, one for student level data and another one for class level data. Student and class level IDs are generated as string values like:Student data set:student ID ->141PSDM2L,1420CHY1L ...2014-5-5 23:17 - Nicolle - HLM专版
Dave Atkins Lectures Notes:Applied Multilevel Analysis
1 个回复 - 1670 次查看 Lectures Notes for PG858: Applied Multilevel Analysis David Atkins, Ph.D. datkins@uw.edu | CV Research Associate Professor, Psychiatry 1100 NE 45th, Suite 300, Office 334 Box 354944 Seattle, ...2014-5-30 02:27 - Nicolle - HLM专版
Meta-analysis Using Multilevel and Bayesian Models
1 个回复 - 2236 次查看 Meta-analysis Using Multilevel and Bayesian Models2014-1-10 11:56 - Trevor - HLM专版
Tom Snijders Lecture Notes Multilevel Analysis
3 个回复 - 1881 次查看 MULTILEVEL ANALYSISTom A. B. Snijdershttp://www.stats.ox.ac.uk/~snijders/mlbook.htm2014-3-21 23:17 - Nicolle - HLM专版
[100 Multilevel Questions] Multilevel Survival Analysis using R?
1 个回复 - 1815 次查看 I am trying to estimate event history models (also known as survival models) with time-varying predictors at two different levels of (geographical) aggregation. More precisely, I am using a discrete ...2014-3-19 23:32 - Nicolle - HLM专版
Multilevel Analysis or Seemingly Unrelated Regressions?
2 个回复 - 2205 次查看 Dear list, When running two separate multilevel models (2 levels: student within schools; hours homework as fixed predictor) one for girls and the other for boys, I get two (different) effect para ...2014-3-20 03:50 - Eviewschen - HLM专版
Data Set: Multilevel Analysis for Applied Research: It′s just Regression!
0 个回复 - 1930 次查看 I am currently reading R. Bickel (2007) Multilevel Analysis for Applied Research: It′s just Regression! Guildford Press. The book is supposed to come with SPSS files. However, the website with the da ...2014-3-17 22:59 - SPSSCHEN - HLM专版
[100 Multilevel Questions]Multilevel exploratory factor analysis
0 个回复 - 1521 次查看 We are creating a scale to measure the 'strength of tie' between two people. We conducted a survey where each person was asked to name a number of other people they know. They were then asked to respo ...2014-3-14 02:45 - Nicolle - HLM专版
[100 Multilevel Questions] Whether I should standardize the data before analysis
0 个回复 - 1586 次查看 Recently I obsessed about standardization of scores. I am looking into statistical literature to see if standardization of data is OK or not. A brief about standardization can be found at http://en.wi ...2014-3-14 02:29 - Nicolle - HLM专版
[100 Multilevel Questions]Multivariate multi-level analysis using R nlme package
0 个回复 - 1385 次查看 The questionI have a dataset which I think requires a multivariate multilevel analysis. I am unsure both of the appropriate model and of how to fit it with R. I have come up with a tentative model, bu ...2014-3-14 02:25 - Nicolle - HLM专版
Endogenous Problem in Multilevel Analysis?
1 个回复 - 1347 次查看 I have to conduct a two-level model (level 1=respondents and level 2=cities). The variable of my interest is a level 2 variable. My concern is that the variable of my interest is likely to be endogeno ...2014-3-10 21:45 - Nicolle - HLM专版
[有奖答题]Multilevel Analysis Questions:1-5
10 个回复 - 1747 次查看 [Question 1] For a mixed model analysis, we specify that treatment (shade) is a fixed effect, that block and plot are random effects, and that plot is nested in block. The software works out for it ...2014-2-7 10:37 - Nicolle - HLM专版
What might be minimum requirement for multilevel analysis?
0 个回复 - 1308 次查看 As we know, the more the better when we considering modeling. Anyway, what might be the minimum requirements for multilevel modeling? Thanks2014-2-4 23:53 - Lisrelchen - HLM专版
[100 Multilevel Questions]Multilevel Analysis using SPSS?
0 个回复 - 1738 次查看 I’am trying to get a new perspective on some data on sleep deprivation and counter measures and thanks in advance everybody for investing some brain power in my problem. Here comes a brief descripti ...2014-3-14 02:27 - Nicolle - HLM专版
征stata multilevel analysis 高手合作文章
0 个回复 - 684 次查看 求会xtmixed 高手。一起发表文章。 有兴趣的请联系我。 谢谢2015-10-7 05:13 - muddling - Stata专版
Regression analysis of multilevel data with measurement error
1 个回复 - 606 次查看 【作者(必填)】N. T. Longford 【文题(必填)】Regression analysis of multilevel data with measurement error 【年份(必填)】British Journal of Mathematical and Statistical Psychology. Volume 46, Issu ...2015-10-2 23:24 - nash - 求助成功区
A multilevel analysis of effort, practice, and performance: effects; of ability,
1 个回复 - 1052 次查看 【作者(必填)】Yeo Gillian B, Neal Andrew 【文题(必填)】 A multilevel analysis of effort, practice, and performance: effects; of ability, conscientiousness, and goal orientation. 【年份(必填)】 ...2015-8-13 10:56 - every329 - 求助成功区
[Lecture Notes]Multilevel Analysis/Hierarchical Linear Modeling
6 个回复 - 1666 次查看 Professor Quantitative and Evaluative Research Methodologies 236C Education Building 1310 S. Sixth St. Champaign, IL 61820 cja@illinois.edu phone: 217-244-3537 Multilevel Analysis/Hierar ...2015-4-4 01:38 - Lisrelchen - HLM专版
[Lecture Notes]Multilevel Mediation Analysis
10 个回复 - 2483 次查看 Multilevel Mediation AnalysisAndrew F. HayesThe Ohio State Universitywww.afhayes.comWorkshop Presented at the Association for Psychological Science, Washington DC, 23 May 2013 Sponsored by the Associa ...2015-3-29 09:50 - Nicolle - HLM专版
JSTOR: Innovation at and across Multiple Levels of Analysis
1 个回复 - 704 次查看 【作者(必填)】 Anil K. Gupta, Paul E. Tesluk and M. Susan Taylor 【文题(必填)】Innovation at and across Multiple Levels of Analysis 【年份(必填)】 Organization Science, Vol. 18, No. 6, Innovation ...2015-2-12 11:10 - yinhezhiwang - 求助成功区
JSTOR: Innovation at and across Multiple Levels of Analysis
1 个回复 - 670 次查看 【作者(必填)】Anil K. Gupta, Paul E. Tesluk and M. Susan Taylor 【文题(必填)】 Innovation at and across Multiple Levels of Analysis 【年份(必填)】Organization Science, Vol. 18, No. 6, Innovation at ...2015-2-12 10:19 - yinhezhiwang - 求助成功区
(入门实用的)实用多水平分析Applied Multilevel Analysis——A Practical Guide
5 个回复 - 2088 次查看 Applied Multilevel Analysis 副标题: A Practical Guide for Medical Researchers (Practical Guides to Biostatistics and Epidemiology) 作者: Jos W. R. Twisk 出版社: Cambridge University Press 出版 ...2012-3-25 09:41 - violin1975 - 经管书评
[精品图书下载]Multilevel Analysis of Individuals and Cultures
29 个回复 - 3933 次查看 Multilevel Analysis of Individuals and Cultures Fons J.R. van de Vijver (Editor), Dianne A. Van Hemert (Editor), Ype H. Poortinga (Editor) Book DescriptionPublication Date: Jan. 25 2008 | ISBN-10: ...2014-5-11 09:37 - Nicolle - HLM专版
Multilevel Analysis for Applied Research: Its Just Regression!
8 个回复 - 4337 次查看 Multilevel Analysis for Applied Research: It's Just Regression!Review"This book is one of the best statistical texts that I have ever read, and I would highly recommend using it for an advanced data a ...2009-4-12 11:01 - wodhead - 计量经济学与统计软件
Multilevel analysis 教材
10 个回复 - 3126 次查看 2014-8-2 04:02 - xiushus - 计量经济学与统计软件