Bifalgorithm post · Quantitave problem solving · Reasoning with Data
Spread Uncertainty
Spread Uncertainty (Quantitave problem solving · Reasoning with Data) — "Variance and standard deviation describe how far observations typically lie from the m…
Ideas in this flowchart
- Variability and measurement uncertainty
- Variance describes how far observations typically lie from the mean.
- Standard deviation describes how far observations typically lie from the mean.
- Standard deviation is expressed in the same units as the original measurements.
- Measurement uncertainty
- Instrument limitations can cause measurement uncertainty.
- Random error can cause measurement uncertainty.
- Systematic error can cause measurement uncertainty.
- Uncertainty should be reported with the best estimate.
- Repeated measurements can reduce random error.
- Systematic error requires improved procedures or calibration.
