3. Classify the following data according to its level of measurement. _16. Zip Code _17. Grade (A, At B, B+ , C, F) _18. Nationality 19. Eye color 20. Height 21. Distance _22. Number of children 23. Exam Score _24. Stages of Life 25. Salary 26. IQ 27. Age _28. Religious Affiliation _29. Rating Scale 30. Year of birth

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