A gentle introduction to Stata:
Saved in:
| Main Author: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
College Station, Tex.
Stata Press
2012
|
| Edition: | Rev. 3. ed. |
| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Physical Description: | XXIV, 401 S. graph. Darst. |
| ISBN: | 9781597181099 1597181099 |
Staff View
MARC
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| 245 | 1 | 0 | |a A gentle introduction to Stata |c Alan C. Acock |
| 250 | |a Rev. 3. ed. | ||
| 264 | 1 | |a College Station, Tex. |b Stata Press |c 2012 | |
| 300 | |a XXIV, 401 S. |b graph. Darst. | ||
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Record in the Search Index
| _version_ | 1804148921070518272 |
|---|---|
| adam_text | CONTENTS
LIST OF TABLES XV
LIST OF FIGURES XVII
PREFACE XXI
SUPPORT MATERIALS FOR THE BOOK XXIII
GETTING STARTED 1
1.1 CONVENTIONS 1
1.2 INTRODUCTION 4
1.3 THE STATA SCREEN 7
1.4 USING AN EXISTING DATASET 9
1.5 AN EXAMPLE OF A SHORT STATA SESSION 11
1.6 SUMMARY 18
1.7 EXERCISES 18
ENTERING DATA 21
2.1 CREATING A DATASET 21
2.2 AN EXAMPLE QUESTIONNAIRE 23
2.3 DEVELOPING A CODING SYSTEM 24
2.4 ENTERING DATA USING THE DATA EDITOR 29
2.4.1 VALUE LABELS 32
2.5 THE VARIABLES MANAGER 33
2.6 THE DATA EDITOR (BROWSE) VIEW 39
2.7 SAVING YOUR DATASET 40
2.8 CHECKING THE DATA 42
2.9 SUMMARY 45
2.10 EXERCISES 46
VIII CONTENTS
3 PREPARING DATA FOR ANALYSIS 47
3.1 INTRODUCTION 47
3.2 PLANNING YOUR WORK 47
3.3 CREATING VALUE LABELS 53
3.4 REVERSE-CODE VARIABLES 56
3.5 CREATING AND MODIFYING VARIABLES 61
3.6 CREATING SCALES 66
3.7 SAVING SOME OF YOUR DATA 69
3.8 SUMMARY 70
3.9 EXERCISES 71
4 WORKING WITH COMMANDS, DO-FILES, AND RESULTS 73
4.1 INTRODUCTION 73
4.2 HOW STATA COMMANDS ARE CONSTRUCTED 74
4.3 CREATING A DO-FILE 78
4.4 COPYING YOUR RESULTS TO A WORD PROCESSOR 84
4.5 LOGGING YOUR COMMAND FILE 86
4.6 SUMMARY 87
4.7 EXERCISES 88
5 DESCRIPTIVE STATISTICS AND GRAPHS FOR ONE VARIABLE .*,, 89
5.1 DESCRIPTIVE STATISTICS AND GRAPHS 89
5.2 WHERE IS THE CENTER OF A DISTRIBUTION? 90
5.3 HOW DISPERSED IS THE DISTRIBUTION? 94
5.4 STATISTICS AND GRAPHS*UNORDERED CATEGORIES 96
5.5 STATISTICS AND GRAPHS*ORDERED CATEGORIES AND VARIABLES 105
5.6 STATISTICS AND GRAPHS*QUANTITATIVE VARIABLES 107
5.7 SUMMARY 114
5.8 EXERCISES 115
6 STATISTICS AND GRAPHS FOR TWO CATEGORICAL VARIABLES 119
6.1 RELATIONSHIP BETWEEN CATEGORICAL VARIABLES 119
6.2 CROSS-TABULATION 120
CONTENTS IX
6.3 CHI-SQUARED TEST 123
6.3.1 DEGREES OF FREEDOM 125
6.3.2 PROBABILITY TABLES 125
6.4 PERCENTAGES AND MEASURES OF ASSOCIATION 128
6.5 ODDS RATIOS WHEN DEPENDENT VARIABLE HAS TWO CATEGORIES 131
6.6 ORDERED CATEGORICAL VARIABLES 133
6.7 INTERACTIVE TABLES 136
6.8 TABLES*LINKING CATEGORICAL AND QUANTITATIVE VARIABLES 138
6.9 POWER ANALYSIS WHEN USING A CHI-SQUARED TEST OF SIGNIFICANCE 141
6.10 SUMMARY 143
6.11 EXERCISES 144
7 TESTS FOR ONE OR TWO MEANS 147
7.1 INTRODUCTION TO TESTS FOR ONE OR TWO MEANS 147
7.2 RANDOMIZATION 150
7.3 RANDOM SAMPLING 152
7.4 HYPOTHESES 152
7.5 ONE-SAMPLE TEST OF A PROPORTION 153
7.6 TWO-SAMPLE TEST OF A PROPORTION 155
7.7 ONE-SAMPLE TEST OF MEANS 159
7.8 TWO-SAMPLE TEST OF GROUP MEANS 161
7.8.1 TESTING FOR UNEQUAL VARIANCES 167
7.9 REPEATED-MEASURES T TEST 168
7.10 POWER ANALYSIS 170
7.11 NONPARAMETRIC ALTERNATIVES 177
7.11.1 MANN-WHITNEY TWO-SAMPLE RANK-SUM TEST 178
7.11.2 NONPARAMETRIC ALTERNATIVE: MEDIAN TEST 179
7.12 SUMMARY 179
7.13 EXERCISES 180
8 BIVARIATE CORRELATION AND REGRESSION 183
8.1 INTRODUCTION TO BIVARIATE CORRELATION AND REGRESSION 183
X CONTENTS
8.2 SCATTERGRAMS 184
8.3 PLOTTING THE REGRESSION LINE 189
8.4 CORRELATION 190
8.5 REGRESSION 196
8.6 SPEARMAN S RHO: RANK-ORDER CORRELATION FOR ORDINAL DATA 201
8.7 SUMMARY 202
8.8 EXERCISES 202
9 ANALYSIS OF VARIANCE 205
9.1 THE LOGIC OF ONE-WAY ANALYSIS OF VARIANCE 205
9.2 ANOVA EXAMPLE 206
9.3 ANOVA EXAMPLE USING SURVEY DATA 215
9.4 A NONPARAMETRIC ALTERNATIVE TO ANOVA 218
9.5 ANALYSIS OF COVARIANCE 221
9.6 TWO-WAY ANOVA 232
9.7 REPEATED-MEASURES DESIGN 238
9.8 INTRACLASS CORRELATION*MEASURING AGREEMENT 244
9.9 SUMMARY 246
9.10 EXERCISES 247
10 MULTIPLE REGRESSION 249
10.1 INTRODUCTION TO MULTIPLE REGRESSION 249
10.2 WHAT IS MULTIPLE REGRESSION? 250
10.3 THE BASIC MULTIPLE REGRESSION COMMAND 251
10.4 INCREMENT IN R-SQUARED: SEMIPARTIAL CORRELATIONS 255
10.5 IS THE DEPENDENT VARIABLE NORMALLY DISTRIBUTED? 257
10.6 ARE THE RESIDUALS NORMALLY DISTRIBUTED? 260
10.7 REGRESSION DIAGNOSTIC STATISTICS 264
10.7.1 OUTLIERS AND INFLUENTIAL CASES 264
10.7.2 INFLUENTIAL OBSERVATIONS: DFBETA 267
10.7.3 COMBINATIONS OF VARIABLES MAY CAUSE PROBLEMS 268
10.8 WEIGHTED DATA 270
CONTENTS XI
10.9 CATEGORICAL PREDICTORS AND HIERARCHICAL REGRESSION 272
10.10 A SHORTCUT FOR WORKING WITH A CATEGORICAL VARIABLE 280
10.11 FUNDAMENTALS OF INTERACTION 282
10.12 POWER ANALYSIS IN MULTIPLE REGRESSION 289
10.13 SUMMARY 292
10.14 EXERCISES 293
11 LOGISTIC REGRESSION 297
11.1 INTRODUCTION TO LOGISTIC REGRESSION 297
11.2 AN EXAMPLE 298
11.3 WHAT IS AN ODDS RATIO AND A LOGIT? 302
11.3.1 THE ODDS RATIO 304
11.3.2 THE LOGIT TRANSFORMATION 304
11.4 DATA USED IN THE REST OF THE CHAPTER 305
11.5 LOGISTIC REGRESSION 306
11.6 HYPOTHESIS TESTING 314
11.6.1 TESTING INDIVIDUAL COEFFICIENTS 314
11.6.2 TESTING SETS OF COEFFICIENTS 315
11.7 NESTED LOGISTIC REGRESSIONS 317
11.8 POWER ANALYSIS WHEN DOING LOGISTIC REGRESSION 319
11.9 SUMMARY 322
11.10 EXERCISES 323
12 MEASUREMENT, RELIABILITY, AND VALIDITY 325
12.1 OVERVIEW OF RELIABILITY AND VALIDITY 325
12.2 CONSTRUCTING A SCALE 326
12.2.1 GENERATING A MEAN SCORE FOR EACH PERSON 327
12.3 RELIABILITY 328
12.3.1 STABILITY AND TEST-RETEST RELIABILITY 331
12.3.2 EQUIVALENCE 332
12.3.3 SPLIT-HALF AND ALPHA RELIABILITY*INTERNAL CONSISTENCY .... 332
12.3.4 KUDER-RICHARDSON RELIABILITY FOR DICHOTOMOUS ITEMS 335
XII CONTENTS
12.3.5 RATER AGREEMENT*KAPPA (K) 336
12.4 VALIDITY 339
12.4.1 EXPERT JUDGMENT 339
12.4.2 CRITERION-RELATED VALIDITY 340
12.4.3 CONSTRUCT VALIDITY 341
12.5 FACTOR ANALYSIS 342
12.6 PCF ANALYSIS 347
12.6.1 ORTHOGONAL ROTATION: VARIMAX 350
12.6.2 OBLIQUE ROTATION: PROMAX 352
12.7 BUT WE WANTED ONE SCALE, NOT FOUR SCALES 353
12.7.1 SCORING OUR VARIABLE 354
12.8 SUMMARY 355
12.9 EXERCISES 356
13 WORKING WITH MISSING VALUES*MULTIPLE IMPUTATION 357
13.1 THE NATURE OF THE PROBLEM 357
13.2 MULTIPLE IMPUTATION AND ITS ASSUMPTIONS ABOUT THE MECHANISM FOR
MISSINGNESS 359
13.3 WHAT VARIABLES DO WE INCLUDE WHEN DOING IMPUTATIONS? 361
13.4 MULTIPLE IMPUTATION 362
13.5 A DETAILED EXAMPLE 363
13.5.1 PRELIMINARY ANALYSIS 364
13.5.2 SETUP AND MULTIPLE-IMPUTATION STAGE 366
13.5.3 THE ANALYSIS STAGE 369
13.5.4 FOR THOSE WHO WANT AN R
2
AND STANDARDIZED /3S 370
13.5.5 WHEN IMPOSSIBLE VALUES ARE IMPUTED 372
13.6 SUMMARY 374
13.7 EXERCISES 375
A WHAT S NEXT? 377
A.I INTRODUCTION TO THE APPENDIX 377
A.2 RESOURCES 377
CONTENTS XIII
A.2.1 WEB RESOURCES 378
A.2.2 BOOKS ABOUT STATA 380
A.2.3 SHORT COURSES 383
A.2.4 ACQUIRING DATA 383
A.3 SUMMARY 384
REFERENCES 387
AUTHOR INDEX 391
SUBJECT INDEX 393
|
| any_adam_object | 1 |
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| dewey-full | 519.50285536922 |
| dewey-hundreds | 500 - Natural sciences and mathematics |
| dewey-ones | 519 - Probabilities and applied mathematics |
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| dewey-search | 519.502855369 22 |
| dewey-sort | 3519.502855369 222 |
| dewey-tens | 510 - Mathematics |
| discipline | Informatik Mathematik Wirtschaftswissenschaften |
| edition | Rev. 3. ed. |
| format | Book |
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| spelling | Acock, Alan C. 1944- Verfasser (DE-588)1037993705 aut A gentle introduction to Stata Alan C. Acock Rev. 3. ed. College Station, Tex. Stata Press 2012 XXIV, 401 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier Stata (DE-588)4617285-3 gnd rswk-swf 1\p (DE-588)4151278-9 Einführung gnd-content Stata (DE-588)4617285-3 s DE-604 SWB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=024808326&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis 1\p cgwrk 20201028 DE-101 https://d-nb.info/provenance/plan#cgwrk |
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| title | A gentle introduction to Stata |
| title_auth | A gentle introduction to Stata |
| title_exact_search | A gentle introduction to Stata |
| title_full | A gentle introduction to Stata Alan C. Acock |
| title_fullStr | A gentle introduction to Stata Alan C. Acock |
| title_full_unstemmed | A gentle introduction to Stata Alan C. Acock |
| title_short | A gentle introduction to Stata |
| title_sort | a gentle introduction to stata |
| topic | Stata (DE-588)4617285-3 gnd |
| topic_facet | Stata Einführung |
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