{"uid":"cap_bcWaY444U5lA53h3mSSS_","slug":"sampling-observations-category-frequencies-equal-width-histogram-2064ab77","name":"Sampling Observations — Category Frequencies + Equal-Width Histogram","description":"Sampling observations — Category frequencies + Equal-width histogram: Category frequencies + Equal-width histogram for supplied sampling observations records (sample_value, sample_weight). Up to 200 rows; 2 independent reports using shared local analytical engines. No live lookup, prediction, professional assessment or external action. 0.01 USDC includes 2 supplied-data reports for up to 200 rows.","url":"https://market.datapackvibe.com/x402/assistant-ib26-analytics-15-106?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"bins":{"type":"integer","default":5,"maximum":30,"minimum":1},"rows":{"type":"array","items":{"type":"object","required":["row_id","dataset_group","date","sample_value","sample_weight"],"properties":{"date":{"type":"string","default":"","pattern":"^\\d{4}-\\d{2}-\\d{2}$","maxLength":10},"row_id":{"type":"string","default":"","maxLength":80,"minLength":1},"sample_value":{"type":["number","null"],"maximum":1000000000000,"minimum":-1000000000000},"dataset_group":{"type":"string","default":"","maxLength":80},"sample_weight":{"type":["number","null"],"maximum":1000000000000,"minimum":-1000000000000}},"additionalProperties":false},"default":[{"date":"2026-10-01","row_id":"row-1","sample_value":10,"dataset_group":"group-a","sample_weight":1},{"date":"2026-10-02","row_id":"row-2","sample_value":20,"dataset_group":"group-b","sample_weight":2},{"date":"2026-10-03","row_id":"row-3","sample_value":15,"dataset_group":"group-a","sample_weight":3},{"date":"2026-10-04","row_id":"row-4","sample_value":30,"dataset_group":"group-b","sample_weight":4}],"maxItems":200,"minItems":1},"field":{"enum":["sample_value","sample_weight"],"type":"string","default":"sample_value"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_WlBAtexZuL_WL-wfDBwzM","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes category frequency counts and an equal-width histogram for up to 200 sampling observation records (sample_value, sample_weight).","exampleAgentPrompt":"I have 150 sampling records with sample_value and sample_weight fields across two groups — can you compute both the category frequencies by dataset_group and an equal-width histogram of sample_value using 10 bins?","exampleUseCases":[{"title":"Survey response distribution analysis","prompt":"I've collected 80 survey responses with numeric scores and weights — can you give me category frequencies by survey group and a 5-bin equal-width histogram of the sample_value field so I can see how scores are distributed?"},{"title":"Quality control sampling histogram","prompt":"I have 200 manufacturing measurement samples across two product lines, each with a sample_value and a sample_weight — please compute category frequencies by product line and split the measurements into 8 equal-width bins."},{"title":"Market research weight distribution","prompt":"Here are 120 market research observations with sample values and sample weights across three regions — give me the category frequency counts by region and a 6-bin histogram of the sample_weight field."}],"resultDescription":"Returns two independent analytical reports: (1) category frequency counts showing how many records fall in each dataset_group category, and (2) an equal-width histogram partitioning the chosen numeric field (sample_value or sample_weight) into the specified number of bins, with counts per bin — all computed locally on the supplied data with no external lookups.","failureModes":["More than 200 rows submitted — request rejected with row count error","bins value outside 1–30 range — validation error","Missing required fields (row_id, dataset_group, date, sample_value, sample_weight) — schema validation failure","sample_value or sample_weight outside ±1,000,000,000,000 — rejected","All sample_value entries are null — histogram cannot be computed","Invalid date format (not YYYY-MM-DD) — pattern validation error"],"whenToPreferThis":"Choose this endpoint when you need two quick statistical summaries — category frequencies and a histogram — computed purely on supplied data without any external data access, predictions, or professional assessments. It is ideal for small-to-medium datasets (up to 200 rows) where you want both group-level counts and a numeric distribution in a single low-cost call ($0.01 USDC). Prefer it over general-purpose analytics services when you want a simple, reproducible, serverless statistical computation on sampling observation data with weighted records.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-15T12:38:26.441Z","isFirstParty":false,"canonicalSlug":"sampling-observations-category-frequencies-equal-width-histogram-2064ab77"}