Examples
Examples
Try the starting example
- Quadrats [stratum ID,count,area m²]
- [[1,4,2],[1,6,2],[2,3,1]]
- Stratum count-area density summaries
- [[1,10,4,2.5,0.5],[2,3,1,3,"SE unavailable"]]
- Pooled sampled-area density
- 2.6
Try another scenario
- Quadrats [stratum ID,count,area m²]
- [[1,5,2],[1,8,2],[2,4,1]]
- Stratum count-area density summaries
- [[1,13,4,3.25,0.75],[2,4,1,4,"SE unavailable"]]
- Pooled sampled-area density
- 3.4
Calculation method
Calculation method
Stratum count-area density summaries
[stratum,total count,total sampled area,pooled density per m²,quadrat-rate standard error]; one quadrat has unavailable SE.
Pooled sampled-area density
Total count / total sampled area; no unsampled stratum weighting.
Symbols and units
- a
- Quadrats [stratum ID,count,area m²]
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
- Organism counts, sampled areas, strata. Returns Density estimates and sampling summaries. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification.
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.