Description
Subtract literal group means from supplied panel observations.
Econometric calculations separate supplied residuals, regressors, weights, restrictions, panel groups and reference periods. One score or moment contribution is not a fitted estimator, and one scalar covariance term is not a standard error. Unit rescaling and event-time arithmetic preserve conventions without establishing model identification or causal interpretation.
Subtract literal group means from supplied panel observations.
When to use this tool
Use Panel Within Group Deviation when you already have values, groupCodes and need to subtract literal group means from supplied panel observations.
How to use the tool and how it works
- Enter values, groupCodes. Follow any array-alignment requirements below. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read withinDeviations, groupMeans. Use the output convention below.
Require equal-length values/groupCodes arrays; accumulate an unweighted sum and count for each exact group code. Return each row's group mean and value-minus-mean deviation in original order.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| values | Values | Required. Array of finite number; maximum items 256. |
| groupCodes | Group Codes | Required. Array of text; maximum UTF-16 length 8192; maximum items 256. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| withinDeviations | Within Deviations | Required. Array of finite number; maximum items 256. |
| groupMeans | Unweighted mean repeated at each row in original order; groups use exact code equality. | Required. Array of finite number; maximum items 256. |
{
"input": {
"values": [
2,
4,
10,
14
],
"groupCodes": [
"A",
"A",
"B",
"B"
]
},
"output": {
"withinDeviations": [
-1,
1,
-2,
2
],
"groupMeans": [
3,
3,
12,
12
]
}
}Limitations and assumptions
- Empty arrays return empty outputs; empty group codes and repeated groups are accepted. No time structure, additional fixed effects, weighting, missingness or full model is inferred; unstable sums can fail or lose precision.
- 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
Fit and evaluate the full specified model with appropriate data, grouping and uncertainty treatment for inference. Aggregate the required score/moment terms and use the complete covariance calculation; a local residual, cutoff flag or supplied coefficient transformation does not validate the estimator.
References
Similar or alternative tools
- Fixed Effect Absorption Grandmean Term
Apply a supplied group-mean subtraction and grand-mean restoration.
- Panel Missing Time Gap
Count missing expected steps between ordered panel indices.