Examples
Examples
Try the starting example
- Group A mean
- 12
- Group A sample SD
- 3
- Group A sample size
- 30
- Group B mean
- 10
- Group B sample SD
- 4
- Group B sample size
- 35
- Cohen d
- 0.559503
- Hedges g (approximate correction)
- 0.552816
- Pooled SD
- 3.574602
Try another scenario
- Group A mean
- 13.200000000000001
- Group A sample SD
- 3
- Group A sample size
- 30
- Group B mean
- 10
- Group B sample SD
- 4
- Group B sample size
- 35
- Cohen d
- 0.895205
- Hedges g (approximate correction)
- 0.884505
- Pooled SD
- 3.574602
Calculation method
Calculation method
Cohen d
Pooled variance weighted by n-1; g=d(1-3/(4df-1)).
Hedges g (approximate correction)
Pooled variance weighted by n-1; g=d(1-3/(4df-1)).
Pooled SD
Pooled variance weighted by n-1; g=d(1-3/(4df-1)).
Symbols and units
- a
- Group A mean
- b
- Group A sample SD
- c
- Group A sample size
- d
- Group B mean
- e
- Group B sample SD
- f
- Group B sample size
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
- Independent groups; no paired standardization. Supported limits: All required fields must be finite values of the exact declared type and within displayed bounds. Lists contain1–1000 finite numbers. JSON tables are numeric rectangular rows, at most100 rows and30 columns; individual tools have stricter shape/domain constraints. Independent groups; no paired standardization.
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.