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Question 28911: Set of All Maximum-Frequency Observed Values

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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R0056-28911 · q-20261005-advance-20261006-r07-descriptive-statistics-0086

Original question and givens

The nonempty observation list is D=[13, 0, 0, 0, -12, -12]. Retain every repetition. Under the explicit all-frequency-maximizers convention, give every value with maximum frequency as an increasing set, including all values if every frequency is one.

  • G001 — The nonempty observation list is D=[13, 0, 0, 0, -12, -12]. Retain every repetition. Under the explicit all-frequency-maximizers convention, give every value with maximum frequency as an increasing set, including all values if every frequency is one.

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 roles = [qf-statistics-maximal-frequency-set, maximal_frequency_set]

After

derived = [ALL_frequency_maximizers_numeric_set]

Conditions: none

Use the declared scalar/set/Yes-No/fraction answer role;integer fractions retain/1.Do not add an undeclared domain or change original bilingual data,formulas or questions.

Step identifiers and dependencies

Rule: R56_source_answer_role_and_EXACT_family_interface · Uses: G001

S002 · implies

Before

source roles = [[13, 0, 0, 0, -12, -12]]

After

derived = [[-12, -12, 0, 0, 0, 13], 6]

Conditions: none

Retain EVERY observation,including repeated values.Numeric sorting changes order only,not n or the sum;do not deduplicate as a set or sort lexically.These are sample summaries,not inferred population laws.

Step identifiers and dependencies

Rule: Statistics_FULL_observations_MULTIPLICITY_and_numeric_order · Uses: G001, S001

S003 · calculation

Before

Statistics ORIGINAL ALL indicators for value-12 := sum(0, 0, 0, 0, 1, 1)

After

Statistics ORIGINAL ALL indicators for value-12 = 2

Conditions: none

Perform exact rational arithmetic on the ORIGINAL roles.SAFE bounds raw inputs only;derived integers are unbounded and never approximated by floats.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S002

S004 · calculation

Before

Statistics ORIGINAL ALL indicators for value0 := sum(0, 1, 1, 1, 0, 0)

After

Statistics ORIGINAL ALL indicators for value0 = 3

Conditions: none

Perform exact rational arithmetic on the ORIGINAL roles.SAFE bounds raw inputs only;derived integers are unbounded and never approximated by floats.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S003

S005 · calculation

Before

Statistics ORIGINAL ALL indicators for value13 := sum(1, 0, 0, 0, 0, 0)

After

Statistics ORIGINAL ALL indicators for value13 = 1

Conditions: none

Perform exact rational arithmetic on the ORIGINAL roles.SAFE bounds raw inputs only;derived integers are unbounded and never approximated by floats.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S004

S006 · implies

Before

source roles = [[13, 0, 0, 0, -12, -12], all_frequency_maximizers]

After

derived = [[[-12, 2], [0, 3], [13, 1]], 3, [0], {0}]

Conditions: none

Count ALL occurrences in the complete list for each distinct value,and retain EVERY maximum-frequency tie.Under the EXPLICIT all_frequency_maximizers convention,an all-distinct sample returns every value,not another textbook no-mode convention.

Step identifiers and dependencies

Rule: Statistics_EXPLICIT_ALL_frequency_maximizers_ALL_ties · Uses: G001, S005

Reverse checks

  • S006 · premise_and_result_audit — Reverse-check EACH original datum and premise,retaining indices,signs and strict/non-strict boundaries.A correct final answer cannot replace the derivation obligations.This is candidate teaching/exact checking,not formal proof or publication clearance.
  • S005 · premise_and_result_audit — Recompute Statistics ORIGINAL ALL indicators for value13 with exact rational arithmetic, not rounded decimals.
  • S004 · premise_and_result_audit — Recompute Statistics ORIGINAL ALL indicators for value0 with exact rational arithmetic, not rounded decimals.
  • S003 · premise_and_result_audit — Recompute Statistics ORIGINAL ALL indicators for value-12 with exact rational arithmetic, not rounded decimals.
  • S002 · premise_and_result_audit — Reverse-check EACH original datum and premise,retaining indices,signs and strict/non-strict boundaries.A correct final answer cannot replace the derivation obligations.This is candidate teaching/exact checking,not formal proof or publication clearance.
  • S001 · premise_and_result_audit — Reverse-check EACH original datum and premise,retaining indices,signs and strict/non-strict boundaries.A correct final answer cannot replace the derivation obligations.This is candidate teaching/exact checking,not formal proof or publication clearance.

Result

{0}

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: f8e1babfb635a60f009b9676409110d4bdda80823871a493eb7bdd5aef22da08
  • candidate record SHA-256: ac9493550dcb4410171537560b1430d62407d3995802d2cff6ebdc1d8153a0ea
  • semantic review receipt SHA-256: 8bbda4edbed7078634ae88342998c79bcfb95de96187fac119c3b08e0adb0bc8
  • question-first witness SHA-256: 3edafa72d63d16a22414892b55806430e0a25b15b926d04f312550179607759f
  • Lean: NOT_RUN · human review: NOT_PERFORMED
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