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Flashcards in Working Scientifically Deck (8)
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1

What a valid result

A valid result is when you know you have measured what you intended to measure

2

What is precision

Precision is closeness of agreement between individual results obtained using same procedure under exact same conditions

3

What is accuracy

Accuracy is measure of closeness of agreement between results and an accepted "true" value

4

What are repeatable results

Repeatable results are replicate results that are in close agreement

5

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

6

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

7

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

8

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