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Question 19101: One Fixed Statistic Has a Family of Parameter-Indexed Laws

On this page
  1. Original question and givens
  2. Definition and scope
  3. Step-by-step derivation
  4. Reverse checks
  5. Result
  6. This question review and source binding

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R0037-19101 · q-20261014-advance-20261105-r06-sampling-distribution-0026

Original question and givens

Use common outcomes=Fin(4)={0,…,3}, parameter indices=Fin(2)={0,…,1}, complete exact law rows=[[1/8, 2/8, 3/8, 2/8], [2/12, 3/12, 4/12, 3/12]], and one total parameter-independent statistic T=[0, 0, 1, 2] in outcome order. Every law is nonnegative and sums to1. For each parameter, add law masses over each T-fibre; list the distinct statistic values increasingly, retaining zero-mass fibres. A parameter law, a sampling law and an observed estimate are different objects; no prior or posterior is supplied. Give (statistic, parameter_laws, model_qualified, certificate).

  • G001 — Use common outcomes=Fin(4)={0,…,3}, parameter indices=Fin(2)={0,…,1}, complete exact law rows=[[1/8, 2/8, 3/8, 2/8], [2/12, 3/12, 4/12, 3/12]], and one total parameter-independent statistic T=[0, 0, 1, 2] in outcome order. Every law is nonnegative and sums to1. For each parameter, add law masses over each T-fibre; list the distinct statistic values increasingly, retaining zero-mass fibres. A parameter law, a sampling law and an observed estimate are different objects; no prior or posterior is supplied. Give (statistic, parameter_laws, model_qualified, certificate).

Definition and scope

Use the original question domain, assumptions and cited MKO definitions. This item has second-context mathematical and bilingual review, with the model, answer and every arithmetic step independently recomputed from the original parameters; the source question remains a candidate.

Step-by-step derivation

S001 · implies

Before

source operation=sampling-family-readback;original snapshot and mathematics retained

After

explicit ordered source output fields=[statistic, parameter_laws, model_qualified, certificate]

Conditions: none

Retain the historical interface marker in the original snapshot while listing ordered source fields here,without JavaScript or external lookup.Field names are not mathematical evidence,and No retains the operation's specific claim scope.

Step identifiers and dependencies

Rule: source_ordered_interface_explicit_without_javascript · Uses: G001

S002 · calculation

Before

sampling parameter0 full law mass := sum(1/8, 1/4, 3/8, 1/4)

After

sampling parameter0 full law mass = 1

Conditions: none

Substitute original roles and established intermediates exactly,retaining parameter,outcome,target and denominator roles without replacing the claim.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S001

S003 · implies

Before

sampling:original parameter SLOT=0;same outcome carrier Fin(4);ALL aligned law masses=[1/8, 1/4, 3/8, 1/4]

After

full sum=1;all masses nonnegative=Yes;qualified probability law;zero-mass outcomes retained

Conditions: none

Each complete parameter law must separately be nonnegative and total1.Keep zero-mass outcomes in the original table;do not normalize across parameter rows to invent a prior or posterior.

Step identifiers and dependencies

Rule: finite_statistical_full_law_not_partial_or_prior · Uses: G001, S002

S004 · calculation

Before

sampling parameter1 full law mass := sum(1/6, 1/4, 1/3, 1/4)

After

sampling parameter1 full law mass = 1

Conditions: none

Substitute original roles and established intermediates exactly,retaining parameter,outcome,target and denominator roles without replacing the claim.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S003

S005 · implies

Before

sampling:original parameter SLOT=1;same outcome carrier Fin(4);ALL aligned law masses=[1/6, 1/4, 1/3, 1/4]

After

full sum=1;all masses nonnegative=Yes;qualified probability law;zero-mass outcomes retained

Conditions: none

Each complete parameter law must separately be nonnegative and total1.Keep zero-mass outcomes in the original table;do not normalize across parameter rows to invent a prior or posterior.

Step identifiers and dependencies

Rule: finite_statistical_full_law_not_partial_or_prior · Uses: G001, S004

S006 · implies

Before

sampling:parameter SLOT carrier Fin(2);common outcome carrier Fin(4);ONE total original statistic array=[0, 0, 1, 2]

After

T takes only the observation index,not the unknown parameter;SAME function at all parameter slots;its sampling law may still vary with the slot

Conditions: none

Functional parameter-independence is different from a parameter-free distribution of T(X).Use the same original statistic value at every outcome rather than changing T between laws.

Step identifiers and dependencies

Rule: finite_statistic_definition_not_distribution_free · Uses: G001, S005

S007 · calculation

Before

sampling parameter0 statistic value0 full fibre mass := sum(1/8, 1/4)

After

sampling parameter0 statistic value0 full fibre mass = 3/8

Conditions: none

Substitute original roles and established intermediates exactly,retaining parameter,outcome,target and denominator roles without replacing the claim.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S006

S008 · implies

Before

FIXED original parameter SLOT=0;statistic value=0;FULL original fibre outcome indices=[0, 1];aligned law masses=[1/8, 1/4]

After

pushforward mass at value0=3/8;retain this row even if mass0

Conditions: none

Add masses from every outcome with the same statistic value,not one representative.Retain every value present in the original statistic even when its fibre has mass0 under this parameter.

Step identifiers and dependencies

Rule: sampling_complete_fibre_not_one_representative_or_null_deletion · Uses: G001, S007

S009 · calculation

Before

sampling parameter0 statistic value1 full fibre mass := sum(3/8)

After

sampling parameter0 statistic value1 full fibre mass = 3/8

Conditions: none

Substitute original roles and established intermediates exactly,retaining parameter,outcome,target and denominator roles without replacing the claim.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S008

S010 · implies

Before

FIXED original parameter SLOT=0;statistic value=1;FULL original fibre outcome indices=[2];aligned law masses=[3/8]

After

pushforward mass at value1=3/8;retain this row even if mass0

Conditions: none

Add masses from every outcome with the same statistic value,not one representative.Retain every value present in the original statistic even when its fibre has mass0 under this parameter.

Step identifiers and dependencies

Rule: sampling_complete_fibre_not_one_representative_or_null_deletion · Uses: G001, S009

S011 · calculation

Before

sampling parameter0 statistic value2 full fibre mass := sum(1/4)

After

sampling parameter0 statistic value2 full fibre mass = 1/4

Conditions: none

Substitute original roles and established intermediates exactly,retaining parameter,outcome,target and denominator roles without replacing the claim.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S010

S012 · implies

Before

FIXED original parameter SLOT=0;statistic value=2;FULL original fibre outcome indices=[3];aligned law masses=[1/4]

After

pushforward mass at value2=1/4;retain this row even if mass0

Conditions: none

Add masses from every outcome with the same statistic value,not one representative.Retain every value present in the original statistic even when its fibre has mass0 under this parameter.

Step identifiers and dependencies

Rule: sampling_complete_fibre_not_one_representative_or_null_deletion · Uses: G001, S011

S013 · calculation

Before

sampling parameter0 complete pushforward mass := sum(3/8, 3/8, 1/4)

After

sampling parameter0 complete pushforward mass = 1

Conditions: none

Substitute original roles and established intermediates exactly,retaining parameter,outcome,target and denominator roles without replacing the claim.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S012

S014 · implies

Before

fixed parameter SLOT=0;ALL increasingly ordered statistic values=[0, 1, 2];disjoint complete fibres=[[0, 1], [2], [3]]

After

pushforward law=[[0, 3/8], [1, 3/8], [2, 1/4]];total mass=1;ANY set of statistic values has preimage equal to the union of its fibres

Conditions: none

The disjoint fibres cover the entire common sample carrier,so the preimage probability of any set of statistic values is the sum of its rows.This gives the complete discrete sampling law,not observed frequencies or a distribution over parameters.

Step identifiers and dependencies

Rule: sampling_pushforward_full_partition_probability_law · Uses: G001, S013

S015 · calculation

Before

sampling parameter1 statistic value0 full fibre mass := sum(1/6, 1/4)

After

sampling parameter1 statistic value0 full fibre mass = 5/12

Conditions: none

Substitute original roles and established intermediates exactly,retaining parameter,outcome,target and denominator roles without replacing the claim.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S014

S016 · implies

Before

FIXED original parameter SLOT=1;statistic value=0;FULL original fibre outcome indices=[0, 1];aligned law masses=[1/6, 1/4]

After

pushforward mass at value0=5/12;retain this row even if mass0

Conditions: none

Add masses from every outcome with the same statistic value,not one representative.Retain every value present in the original statistic even when its fibre has mass0 under this parameter.

Step identifiers and dependencies

Rule: sampling_complete_fibre_not_one_representative_or_null_deletion · Uses: G001, S015

S017 · calculation

Before

sampling parameter1 statistic value1 full fibre mass := sum(1/3)

After

sampling parameter1 statistic value1 full fibre mass = 1/3

Conditions: none

Substitute original roles and established intermediates exactly,retaining parameter,outcome,target and denominator roles without replacing the claim.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S016

S018 · implies

Before

FIXED original parameter SLOT=1;statistic value=1;FULL original fibre outcome indices=[2];aligned law masses=[1/3]

After

pushforward mass at value1=1/3;retain this row even if mass0

Conditions: none

Add masses from every outcome with the same statistic value,not one representative.Retain every value present in the original statistic even when its fibre has mass0 under this parameter.

Step identifiers and dependencies

Rule: sampling_complete_fibre_not_one_representative_or_null_deletion · Uses: G001, S017

S019 · calculation

Before

sampling parameter1 statistic value2 full fibre mass := sum(1/4)

After

sampling parameter1 statistic value2 full fibre mass = 1/4

Conditions: none

Substitute original roles and established intermediates exactly,retaining parameter,outcome,target and denominator roles without replacing the claim.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S018

S020 · implies

Before

FIXED original parameter SLOT=1;statistic value=2;FULL original fibre outcome indices=[3];aligned law masses=[1/4]

After

pushforward mass at value2=1/4;retain this row even if mass0

Conditions: none

Add masses from every outcome with the same statistic value,not one representative.Retain every value present in the original statistic even when its fibre has mass0 under this parameter.

Step identifiers and dependencies

Rule: sampling_complete_fibre_not_one_representative_or_null_deletion · Uses: G001, S019

S021 · calculation

Before

sampling parameter1 complete pushforward mass := sum(5/12, 1/3, 1/4)

After

sampling parameter1 complete pushforward mass = 1

Conditions: none

Substitute original roles and established intermediates exactly,retaining parameter,outcome,target and denominator roles without replacing the claim.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S020

S022 · implies

Before

fixed parameter SLOT=1;ALL increasingly ordered statistic values=[0, 1, 2];disjoint complete fibres=[[0, 1], [2], [3]]

After

pushforward law=[[0, 5/12], [1, 1/3], [2, 1/4]];total mass=1;ANY set of statistic values has preimage equal to the union of its fibres

Conditions: none

The disjoint fibres cover the entire common sample carrier,so the preimage probability of any set of statistic values is the sum of its rows.This gives the complete discrete sampling law,not observed frequencies or a distribution over parameters.

Step identifiers and dependencies

Rule: sampling_pushforward_full_partition_probability_law · Uses: G001, S021

S023 · implies

Before

ONE original statistic=[0, 0, 1, 2];ALL original parameter slots0..1

After

ordered full parameter-indexed family=[[0, [[0, 3/8], [1, 3/8], [2, 1/4]]], [1, [[0, 5/12], [1, 1/3], [2, 1/4]]]];NO parameter averaging or unstated prior

Conditions: none

Retain each parameter's own law;the same statistic may have different sampling distributions.This is an indexed family,not an equal-weight or otherwise invented mixture over parameters.

Step identifiers and dependencies

Rule: sampling_one_statistic_many_laws_not_parameter_prior · Uses: G001, S022

Reverse checks

  • S023 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S022 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S021 · premise_and_result_audit — Recompute sampling parameter1 complete pushforward mass with exact rational arithmetic, not rounded decimals.
  • S020 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S019 · premise_and_result_audit — Recompute sampling parameter1 statistic value2 full fibre mass with exact rational arithmetic, not rounded decimals.
  • S018 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S017 · premise_and_result_audit — Recompute sampling parameter1 statistic value1 full fibre mass with exact rational arithmetic, not rounded decimals.
  • S016 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S015 · premise_and_result_audit — Recompute sampling parameter1 statistic value0 full fibre mass with exact rational arithmetic, not rounded decimals.
  • S014 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S013 · premise_and_result_audit — Recompute sampling parameter0 complete pushforward mass with exact rational arithmetic, not rounded decimals.
  • S012 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S011 · premise_and_result_audit — Recompute sampling parameter0 statistic value2 full fibre mass with exact rational arithmetic, not rounded decimals.
  • S010 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S009 · premise_and_result_audit — Recompute sampling parameter0 statistic value1 full fibre mass with exact rational arithmetic, not rounded decimals.
  • S008 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S007 · premise_and_result_audit — Recompute sampling parameter0 statistic value0 full fibre mass with exact rational arithmetic, not rounded decimals.
  • S006 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S005 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S004 · premise_and_result_audit — Recompute sampling parameter1 full law mass with exact rational arithmetic, not rounded decimals.
  • S003 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S002 · premise_and_result_audit — Recompute sampling parameter0 full law mass with exact rational arithmetic, not rounded decimals.
  • S001 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.

Result

([0, 0, 1, 2], [[0, [[0, 3/8], [1, 3/8], [2, 1/4]]], [1, [[0, 5/12], [1, 1/3], [2, 1/4]]]], Yes, one_theta_independent_total_statistic_family_of_laws)

The full substitutions and premise checks give the original answer; source identity,format and status are unchanged.

This question review and source binding

Review date: 2026-10-26

Original questions, answers, step expressions, numeric ASTs and historical records are retained. Source candidate labels remain historical and are not overwritten as formal proof.

Source hashes and review receipts
  • input commit: 0f7be61e2c22317a4075561dc822c87d881a50db
  • original question SHA-256: d5a5ce0aefc2cead973bb8211dbaf8bf52c2e2767063999de4d636a3a7da5ff4
  • candidate record SHA-256: c778c482b5944d8cf72f178d0f285e1460dd837ca05c076db3d85ef480762ad2
  • semantic review receipt SHA-256: 065507b602ceee60cf47a700d387a51940e0c6724c35a3336a7a7948a199ed80
  • question-first witness SHA-256: 7203f33b030792559673b0fee520a8c0e70903c4dd970b35293aa40852f333d6
  • Lean: NOT_RUN · human review: NOT_PERFORMED
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