Examples
Examples
Try the starting example
- Time-ordered individual readings (measurement units)
- 10,12,11,13
- Individuals center (measurement units)
- 11.5
- Average moving range, span 2 (measurement units)
- 1.666667
- Individuals lower limit (measurement units)
- 7.067376
- Individuals upper limit (measurement units)
- 15.932624
- Moving range lower limit (measurement units)
- 0
- Moving range upper limit (measurement units)
- 5.445
Try another scenario
- Time-ordered individual readings (measurement units)
- 10,14,12,16
- Individuals center (measurement units)
- 13
- Average moving range, span 2 (measurement units)
- 3.333333
- Individuals lower limit (measurement units)
- 4.134752
- Individuals upper limit (measurement units)
- 21.865248
- Moving range lower limit (measurement units)
- 0
- Moving range upper limit (measurement units)
- 10.89
Calculation method
Calculation method
Individuals center (measurement units)
mean(x).
Average moving range, span 2 (measurement units)
mean(abs(x[i]-x[i-1])).
Individuals lower limit (measurement units)
mean(x)-3*MRbar/1.128.
Individuals upper limit (measurement units)
mean(x)+3*MRbar/1.128.
Moving range lower limit (measurement units)
0.
Moving range upper limit (measurement units)
3.267*MRbar.
Symbols and units
- a
- Time-ordered individual readings (measurement units)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Classical I-MR span 2, rounded normal-theory constants. Baseline exploratory limits, not engineering specifications or automatic process certification. Supported limits: 2..1000 finite chronological observations; no gaps or missing values.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
Background reading; this does not imply endorsement or independent review of SumFizz.