{ "schema_version": "core-reviewed-term-ai-handoff-v1", "version": "core-reviewed-term-ai-handoff-v1", "contract_status": "preview", "distribution": "per_term_read_only_ai_handoff", "no_write_operations": true, "canonical": { "url": "https://core.yogoq.com/en-US/core/consumer-price-index", "slug": "consumer-price-index", "locale": "en-US" }, "summary": { "schema_version": "core-reviewed-term-summary-v1", "term_id": "365d747c-ad65-5d99-9faf-9bbcbb76694d", "canonical_slug": "consumer-price-index", "canonical_url": "https://core.yogoq.com/en-US/core/consumer-price-index", "locale": "en-US", "display_name": "Consumer Price Index (CPI)", "english_name": null, "abbreviation": "CPI", "short_definition": "Consumer Price Index (CPI) helps assess inflation and index contracts by clarifying basket price changes and the trade-offs between accuracy and timeliness. It keeps scope and assumptions aligned.", "quality": "reviewed", "publication_status": "published_reviewed", "version": "core-reviewed-term-summary-v1", "last_reviewed_at": "2026-06-01T00:00:00.000Z", "sources_count": 3, "limitations_key": "core-trust-policy-v1-2026-06-22" }, "content": { "definition": { "key": "definition", "title": "一言でいうと", "text": "Consumer Price Index (CPI) helps assess inflation and index contracts by clarifying basket price changes and the trade-offs between accuracy and timeliness. It keeps scope and assumptions aligned.", "items": [] }, "formula": null, "boundary": null, "usage": [ { "key": "meaning", "title": "意味", "text": "CPI measures the average change in prices paid by consumers for a fixed basket of goods and services. It specifies the unit of analysis and the assumptions behind basket price changes, including basket weights and substitution patterns. The concept separates what is in scope (consumer basket, weights, and seasonal adjustments) from what is out of scope (prices outside consumer spending), so comparisons stay consistent. Applied well, it turns a vague debate into a measurable choice and makes the drivers of results explicit.", "items": [] }, { "key": "usage", "title": "役立つ場面", "text": "Use CPI to decide wage or benefit indexation, because it exposes basket price changes and the trade-off with accuracy versus timeliness. It changes budgeting and prioritization by making basket weights and substitution assumptions explicit and reviewable. It informs adjustments when basket updates or housing costs shift, so the decision stays grounded in current conditions.", "items": [ "Use CPI to decide wage or benefit indexation, because it exposes basket price changes and the trade-off with accuracy versus timeliness.", "It changes budgeting and prioritization by making basket weights and substitution assumptions explicit and reviewable.", "It informs adjustments when basket updates or housing costs shift, so the decision stays grounded in current conditions." ] }, { "key": "usage", "title": "使い方のポイント", "text": null, "items": [ "Define the unit and time horizon before comparing CPI changes across options.", "Track the primary driver (index change) separately from secondary noise.", "Run sensitivity checks on basket weights and sampling methods to avoid false precision.", "Document data sources and calculation steps so results are auditable.", "Revisit the metric when the business model or market context changes." ] } ], "misunderstandings": [ { "key": "misunderstandings", "title": "よくある誤解 / 落とし穴", "text": null, "items": [ "CPI is not the cost of living for every household.", "CPI excludes some asset prices and investment costs.", "Revisions or reweighting can change historical comparisons." ] } ], "examples": [ { "key": "examples", "title": "最小例", "text": "A labor contract indexes annual wage increases to CPI. The bargaining team models a 3% CPI path, tests alternative basket weights for housing, and sets a cap and floor to avoid extreme swings. When a rebase changes the index level, they adjust the formula to keep continuity. After implementation, they review CPI revisions and update the index clause before the next contract cycle.", "items": [] } ], "comparisons": [ { "key": "comparisons", "title": "似ている言葉との違い", "text": "Compare Consumer Price Index (CPI) with adjacent concepts before deciding. Consumer Price Index (CPI) | Current concept | Use when the team needs the primary decision lens Adjacent metric or framework | Supporting lens | Use when the team needs evidence or process detail General vocabulary | Broad explanation | Use only for orientation, not final decision-making", "items": [ "Consumer Price Index (CPI) | Current concept | Use when the team needs the primary decision lens", "Adjacent metric or framework | Supporting lens | Use when the team needs evidence or process detail", "General vocabulary | Broad explanation | Use only for orientation, not final decision-making" ] } ], "faq": [ { "question": "When should I use Consumer Price Index (CPI)?", "answer": "Use it when the team needs to decide scope, priority, owner, or trade-off, not when it only needs a short definition." }, { "question": "What makes Consumer Price Index (CPI) useful in practice?", "answer": "It becomes useful when it is tied to evidence, a decision owner, and a concrete next operating choice." }, { "question": "What should I avoid?", "answer": "Avoid using the term as a label without clarifying assumptions, boundaries, and how success will be judged." } ] }, "sources": { "source_refs": [ "concept:economics-concept-0206:en-US", "concept:economics-concept-0206:ja-JP", "core-term-page-500:concept:economics-concept-0206" ], "visible_sources": [ { "label": "CORE Econ (The Economy)", "url": "https://www.core-econ.org/", "kind": null }, { "label": "Principles of Marketing (Open Textbook Library)", "url": "https://open.umn.edu/opentextbooks/textbooks/principles-of-marketing", "kind": "tier_s" }, { "label": "Principles of Management (OpenStax)", "url": "https://openstax.org/details/books/principles-management", "kind": "tier_s" } ] }, "related_terms": [ { "topic_id": "e29d34c4-66c8-54c8-a13b-405f2ca20491", "canonical_slug": "economics-concept-0209", "canonical_url": "https://core.yogoq.com/en-US/core/economics-concept-0209", "title": "Unemployment Rate", "relation_type": "next" }, { "topic_id": "130428c6-39c5-5d02-b6b0-1e4a2618297a", "canonical_slug": "inflation", "canonical_url": "https://core.yogoq.com/en-US/core/inflation", "title": "Inflation", "relation_type": "used_together" }, { "topic_id": "3080427a-a386-5c41-a295-e8390ca1610a", "canonical_slug": "economics-concept-0080", "canonical_url": "https://core.yogoq.com/en-US/core/economics-concept-0080", "title": "Economies of Scale", "relation_type": "used_together" }, { "topic_id": "56c9ea7c-8acd-5033-9fc5-70746b2e9d06", "canonical_slug": "economics-concept-0083", "canonical_url": "https://core.yogoq.com/en-US/core/economics-concept-0083", "title": "Price Discrimination", "relation_type": "used_together" } ], "quality": { "quality": "reviewed", "publication_status": "published_reviewed", "source_count": 3, "last_reviewed_at": "2026-06-01T00:00:00.000Z", "trust_policy_version": "core-trust-policy-v1-2026-06-22" }, "limitations": { "policy_version": "core-trust-policy-v1-2026-06-22", "professional_advice_boundary": "reference_only_not_professional_advice", "text": "This page is reference information for research and learning. For accounting, legal, finance, health, security, or other individual decisions, confirm against primary sources or qualified professionals.", "items": [ "Public pages support general understanding and practical context; they are not professional advice for individual cases.", "Fast-changing information such as regulations, accounting standards, prices, product specs, and legal requirements should be checked against primary sources before final decisions.", "Even when AI-assisted drafting or audit is used, publication relies on quality gates and human-readable evidence." ] } }