General ISA Flashcards
Define precision.
Precision is the refinement in a measurement taken, often seen as the number of significant figures or decimal places.
Define reliability.
The extent to which an experiment gives the same or similar results results when repeated.
Define random error.
Random error is an error in measurement caused by factors which vary from one measurement to another.
Define systematic error.
Systematic errors are constant errors caused by the way one performs the experiment.
Define zero error.
A zero error is an error in calibration of an instrument so that it does not read zero when the quantity being measured is zero.
Define an anomalous result.
A result is anomalous if it doesn’t make sense or fit with your other results or their trend.
When describing an experiment, you should mention what?
- The hypothesis we’re testing.
- Which variables will be changed and kept the same.
- Give specific values for the variables we will use.
- What we will calculate or plot.
- What result will prove or disprove our hypothesis.
Define accuracy.
Accuracy is the degree to which the result of a measurement is close to the real or correct value.
