User Guide for the TIMSS International Database.pdf - TIMSS and ...

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D A T A B A S E F I L E S C H A P T E R 7 7.5 Data Almanacs Data almanacs are included for all student, teacher, and school background variables. The data almanacs are text files that display unweighted summary statistics, by grade, for each participating country on each variable included in the background questionnaires administered to students, teachers, and school administrators or principals. The data almanac files corresponding to each questionnaire type are listed in Table 7.15. Table 7.15 Data Almanac Files Almanac File Contents ASGALM.LIS Student background data - Population 1 ATGALM.LIS Teacher background data - Population 1 ACGALM.LIS School background data - Population 1 BSGALM.LIS Student background data - Population 2 BTMALM.LIS Mathematics teacher background data - Population 2 BTSALM.LIS Science teacher background data - Population 2 BCGALM.LIS School background data - Population 2 There are two types of displays in the data almanacs, depending on whether the item is a categorical variable or a continuous variable. The display for categorical variables includes the sample size, the count of students who were not administered the question, the count of students choosing each of the options on the question, and the count of students who did not choose any of the valid options to the questions. In cases where the question did not apply, the count of students to whom the question did not apply is also presented in the almanac. An example of a categorical variable almanac display is shown in Figure 7.2. T I M S S D A T A B A S E U S E R G U I D E 7 - 39
C H A P T E R 7 D A T A B A S E F I L E S Figure 7.2 Example Data Almanac Display for Categorical Variable Third International Mathematics and Science Study September 22, 1997 Student Background Variables - Population 1 Unweighted data almanac for the TIMSS International Database Question: Are you a girl or a boy? (ASBGSEX) Location: SQ1-2 R:*GRADE INDICATOR*=Lower grade GEN\STUDENT"S SEX 1.GIRL 2.BOY NOT ADM. OMIT Country Cases ------------------------------------------------------------------------------ Australia 4741 2335 2280 126 . Austria 2526 1261 1243 10 12 Canada 7594 3660 3708 83 143 Cyprus 3308 1640 1632 17 19 Czech Republic 3256 1646 1600 10 . England 3056 1507 1478 71 . Greece 2955 1441 1499 15 . Hong Kong 4396 1967 2406 8 15 Hungary 3038 1492 1456 54 36 Iceland 1698 836 819 43 . Iran, Islamic Rep. 3361 1722 1595 44 . Ireland 2889 1348 1506 35 . Japan 4306 2105 2189 12 . Korea 2777 1323 1451 3 . Latvia (LSS) 2054 1027 991 35 1 Netherlands 2790 1379 1391 19 1 New Zealand 2504 1287 1210 6 1 Norway 2219 1063 1101 7 48 Portugal 2650 1286 1359 5 . Scotland 3132 1523 1488 121 . Singapore 7030 3378 3639 7 6 Slovenia 2521 1228 1282 11 . Thailand 2870 1433 1415 21 1 United States 3819 1857 1962 . . A second type of data display is used for continuous variables. This includes the sample size, the count of students who were not administered the question, the count of those who did not respond, the count of those to whom the question did not apply, the mean, mode, minimum, maximum, and the 5th, 10th, 25th, 50th, 75th, 90th, and 95th percentiles. An example of a continuous variable almanac display is shown in Figure 7.3. 7 - 40 T I M S S D A T A B A S E U S E R G U I D E
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International Association for the E
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Contents Chapter 1: Overview of TIM
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C O N T E N T S 7.3 Codebook Files
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C O N T E N T S Table 7.7 Classific
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Chapter 1 Overview of TIMSS and the
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I N T R O D U C T I O N C H A P T E
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Chapter 2 TIMSS Instruments and Boo
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I N S T R U M E N T S C H A P T E R
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Chapter 3 Sampling and Sampling Wei
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S A M P L I N G C H A P T E R 3 Tab
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S A M P L I N G C H A P T E R 3 3.5
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S A M P L I N G C H A P T E R 3 Fig
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S A M P L I N G C H A P T E R 3 Fig
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S A M P L I N G C H A P T E R 3 Tab
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S A M P L I N G C H A P T E R 3 3.8
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S A M P L I N G C H A P T E R 3 SEN
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C H A P T E R 4 D A T A C O L L E C
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C H A P T E R 5 S C A L I N G 5.2 T
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C H A P T E R 5 S C A L I N G Likew
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C H A P T E R 9 P E R F O R M I N G
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R E F E R E N C E S Gonzalez, E.J.
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R E F E R E N C E S Wilson, M.R. (1
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A C K N O W L E D G M E N T S Inter
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A C K N O W L E D M E N T S Austral
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A C K N O W L E D G M E N T S Latvi
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A C K N O W L E D M E N T S TIMSS A
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A C K N O W L E D G M E N T S Quali
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