Data Management Seminar, 8-11th July 2008, Hamburg WinDEM- Verification Checks Part I Data Management Seminar, 8-11th July 2008, Hamburg 2 Automatic checks Content 1. Unique ID Check 2. Validation Check 3. Column Shift Check 1. Unique ID Check 2. Column Shift Check 3. Validation Check 4. Token Check Additional checks 5. Double Punching Check 6. Scoring Reliability 7. WinW3S Linkcheck Data Management Seminar, 8-11th July 2008, Hamburg 3 Data Entry and Verification Data Entry and Verification Instrument Preparation Test Administration Codebook Adaptation Receiving Material Data Submission Scoring Sampling and Preparing Test Administration Data Management Seminar, 8-11th July 2008, Hamburg 4 Complete Student Information Enter Questionnaire Data Enter Achievement and Reliability Data Data Entry and Verification Data Management Seminar, 8-11th July 2008, Hamburg 5 Data Entry and Verification Complete Student Information Enter Questionnaire Data Enter Achievement and Reliability Data Data Management Seminar, 8-11th July 2008, Hamburg 6 1. Automatic checks: Those are performed automatically during data entry stage Within-Country Cleaning: Main Steps 2. Additional checks: Those are performed by the user after data entry Data Management Seminar, 8-11th July 2008, Hamburg 7 WinDEM Checks Automatic Checks 1. Unique ID Check 2. Validation Check 3. Column Shift Check Data Management Seminar, 8-11th July 2008, Hamburg 8 WinDEM Checks Automatic Checks Unique ID Check For each corresponding file (school, teacher and student) an unique identification code will be assigned: School file: IDSCHOOL Teacher file: IDTEACH Student files: IDSTUD Data Management Seminar, 8-11th July 2008, Hamburg 9 WinDEM Checks Automatic Checks Unique ID Check Example Data Management Seminar, 8-11th July 2008, Hamburg 10 WinDEM Checks Automatic Checks 1. Unique ID Check 2. Validation Check 3. Column Shift Check Data Management Seminar, 8-11th July 2008, Hamburg 11 Valid ranges and valid values are defined in the codebook. If the value entered does not correspond to the predefined range or set of valid values, a warning message will appear: For categorical variables only the predefined values are allowed. For non-categorical variables it is possible to enter values out of range, but this needs to be confirmed. WinDEM Checks Automatic Checks Validation Check Data Management Seminar, 8-11th July 2008, Hamburg 12 WinDEM Checks Automatic Checks Validation Check Example 1 Data Management Seminar, 8-11th July 2008, Hamburg 13 WinDEM Checks Automatic Checks Validation Check Example 2 Data Management Seminar, 8-11th July 2008, Hamburg 14 WinDEM Checks Automatic Checks 1. Unique ID Check 2. Validation Check 3. Column Shift Check Data Management Seminar, 8-11th July 2008, Hamburg 15 Check variables (CHECK01, CHECK02...) are inserted after every odd page of a questionnaire or booklet. They are used to avoid column shifts: Column shifts appear when the puncher accidentally shifts to a different variable while punching. Only an empty space can be entered. WinDEM Checks Automatic Checks Column Shift Check Data Management Seminar, 8-11th July 2008, Hamburg 16 WinDEM Checks Automatic Checks Column Shift Check Example Data Management Seminar, 8-11th July 2008, Hamburg Automatic checks: Those are performed automatically during data entry stage Within-Country Cleaning: Main Steps 2. Additional checks: Those are performed by the user after data entry Data Management Seminar, 8-11th July 2008, Hamburg 18 WinDEM Checks Additional Checks After data entry, you must check your data using the features from the "VERIFY" menu: Data Management Seminar, 8-11th July 2008, Hamburg 19 WinDEM Checks Additional Checks 1. Unique ID Check 2. Column Shift Check 3. Validation Check 4. Token Check 5. Double Punching Check 6. Scoring Reliability 7. WinW3S Linkcheck Although some of these checks have already been performed during data entry, the data have to be verified again! NOTE: Data Management Seminar, 8-11th July 2008, Hamburg 20 Checks for duplicate IDs. After performing the check, a report will be created. WinDEM Checks Additional Checks Unique ID Data Management Seminar, 8-11th July 2008, Hamburg 21 WinDEM Checks Additional Checks Unique ID Select Unique ID Check from the Verify Menu Data Management Seminar, 8-11th July 2008, Hamburg 22 WinDEM Checks Additional Checks Unique ID Select Unique ID Check from the Verify Menu Select the unique identifier Data Management Seminar, 8-11th July 2008, Hamburg WinDEM Checks Additional Checks Unique ID Select Unique ID Check from the Verify Menu Select the unique identifier Select the path where the report will be stored + save 23 Data Management Seminar, 8-11th July 2008, Hamburg WinDEM Checks Additional Checks Unique ID Select Unique ID Check from the Verify Menu Select the unique identifier Select the path where the report will be stored + save Confirm the message 24 Data Management Seminar, 8-11th July 2008, Hamburg WinDEM Checks Additional Checks Unique ID Select Unique ID Check from the Verify Menu Select the unique identifier Select the path where the report will be stored + save Confirm the message Select yes to open the report 25 Data Management Seminar, 8-11th July 2008, Hamburg WinDEM Checks Additional Checks Unique ID Report 26 Data Management Seminar, 8-11th July 2008, Hamburg WinDEM Checks Additional Checks Unique ID Solving Suggestions Compare data in both records with the actual instrument Delete records without any valid data Delete data that does not fit the instrument Delete one of the two records, if both have the same data Helpful tools in WinDEM: Table View, Sort and Find Record functionality 27 Data Management Seminar, 8-11th July 2008, Hamburg WinDEM Checks Additional Checks Unique ID Table View Open the View menu Select Table Entry -> Whole Table 28 Data Management Seminar, 8-11th July 2008, Hamburg WinDEM Checks Additional Checks Unique ID Table View 29 Data Management Seminar, 8-11th July 2008, Hamburg WinDEM Checks Additional Checks Unique ID Sort Select Sort Data File from the File menu 30 Data Management Seminar, 8-11th July 2008, Hamburg WinDEM Checks Additional Checks Unique ID Sort Select Sort Data File from the File menu Select the sorting variable 31 Data Management Seminar, 8-11th July 2008, Hamburg WinDEM Checks Additional Checks Unique ID Sort Select Sort Data File from the File menu Select the sorting variable 32 Data Management Seminar, 8-11th July 2008, Hamburg WinDEM Checks Additional Checks Unique ID Find Record Select Find Record(s) from the Edit menu 33 Data Management Seminar, 8-11th July 2008, Hamburg WinDEM Checks Additional Checks Unique ID Find Record Select Find Record(s) from the Edit menu Select the variable you want to search Select the operant (=,