Reliability measures the consistency of results across time and different researchers, while validity ensures the research accurately measures what it is supposed to measure.
| I | Hypothesis | a | Null |
| II | published Books | b | Tool |
| III | Schedule | c | Subject matter of research |
| IV | Applied | d | Secondary Source |
| I | Hypothesis | a | Null |
| II | published Books | b | Tool |
| III | Schedule | c | Subject matter of research |
| IV | Applied | d | Secondary Source |