Working Scientifically Flashcards
What a valid result
A valid result is when you know you have measured what you intended to measure
What is precision
Precision is closeness of agreement between individual results obtained using same procedure under exact same conditions
What is accuracy
Accuracy is measure of closeness of agreement between results and an accepted “true” value
What are repeatable results
Repeatable results are replicate results that are in close agreement
What are reproducible results
Reproducible results are results produced someone else who follows exactly same procedure using same apparatus and materials but at a different place and time
What are systematic errors
Systematic errors are always same throughout investigation. For example, when a measuring device gives readings that are incorrect by a certain value
What are random errors
Random errors are when do not carry out procedure in exactly the same way each time e.g read apparatus a slightly different way
What is validity usually about
Validity is usually about:
Keeping controlled variables constant
Standardizing experimental procedures (doing same things in same way)
Using apparatus appropriately
