Description
Return count expansion for a supplied subsample fraction.
Aquaculture estimates expand supplied samples, classify explicit counts and compare measurements with caller-chosen references. A zero placeholder or split count is a reporting result rather than evidence of absence or a biological diagnosis. Sampling representativeness and actual animal conditions require separate assessment.
Return count expansion for a supplied subsample fraction.
When to use this tool
Use Aquaculture Counter Subsample Expansion Factor when checking the stated aquaculture estimate, class or record convention.
How to use the tool and how it works
- Enter counted, sampledVolume, totalVolume, replicateFraction. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read expansionFactor, estimatedCount. Use the output convention below.
Return count expansion for a supplied subsample fraction. Require nonnegative whole counted, sampledVolume > 0, totalVolume >= sampled and replicateFraction in (0,1]; factor = total/(sampled*replicateFraction), estimatedCount = count*factor.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| counted | Counted | Required. Safe integer; minimum 0. |
| sampledVolume | Sampled Volume | Required. Finite number; strictly above 0. |
| totalVolume | Total Volume | Required. Finite number. |
| replicateFraction | Processed fraction of the supplied sampledVolume, not a number of replicates. | Required. Finite number; maximum 1; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| expansionFactor | Expansion Factor | Required. Finite number. |
| estimatedCount | Estimated Count | Required. Finite number. |
{
"input": {
"counted": 40,
"sampledVolume": 2,
"totalVolume": 100,
"replicateFraction": 0.5
},
"output": {
"expansionFactor": 100,
"estimatedCount": 4000
}
}Limitations and assumptions
- Replicate fraction means the processed part of the stated sampled volume; representativeness, detection and uncertainty are not inferred.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use calibrated representative measurements and an appropriate complete statistical or husbandry assessment with qualified professionals.
References
Similar or alternative tools
- Biomass Count Sample Expansion
Return sampled mean weight and expanded total mass.
- Cohort Biomass Sample Factor
Expand sampled cohort mass to a whole cohort estimate.