When handling chemicals during lab it is important to proceed with caution. Wear gloves whenever pouring chemicals or handling them. If there is a spill be sure to let the teacher know. If you have to dispose of chemicals, always use the waste containers provided on your lab tables.
11 âUnsystematicâ Threats to Reliability 4. Instrument reliabilityâthe research instrument or measurement approach itself (e.g., poorly worded questions, quirk in mechanical device)5. Data processing reliabilityâmanner in which data are handled (e.g., miscoding).
For other uses, see Reliability. Reliability in statistics and psychometrics is the overall consistency of a measure. A measure is said to have a high reliability if it produces similar results under consistent conditions. It is the characteristic of a set of test scores that relates to the amount of random error from the measurement process that might be embedded in the scores.