{"uid":"cap_h_MDQesOYEa23JbFPFlyF","slug":"sampling-observations-category-frequencies-secondary-measure-weighted-03692edd","name":"Sampling Observations — Category Frequencies + Secondary-Measure Weighted Mean","description":"Sampling observations — Category frequencies + Secondary-measure weighted mean: Category frequencies + Secondary-measure weighted mean 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-15-109?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"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_sdDBrHxvMClZJZPjbpbZi","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 frequencies and secondary-measure weighted mean for up to 200 user-supplied sampling observation rows (sample_value, sample_weight) using local analytics.","exampleAgentPrompt":"I have 150 sampling observation rows with sample_value and sample_weight fields across several dataset groups — can you compute the category frequencies and the secondary-measure weighted mean across those groups for the sample_value field?","exampleUseCases":[{"title":"Survey response frequency by group","prompt":"I've collected 80 survey responses tagged with group labels and response scores with weights — can you run category frequency counts and a weighted mean on the sample_value field across those dataset groups?"},{"title":"Quality control sample analysis","prompt":"I have 120 quality control measurements from two production lines, each with a sample weight reflecting batch size — give me the category frequencies and weighted mean for sample_value so I can compare the lines."},{"title":"Clinical trial sampling summary","prompt":"Here are 180 patient sampling records split across treatment groups with sample values and weights for each observation date — compute the category frequencies and weighted mean on sample_value for my statistical report."}],"resultDescription":"Two analytical reports derived from the supplied rows: (1) category frequencies showing how often each dataset_group value appears, and (2) a secondary-measure weighted mean of the specified field (sample_value or sample_weight), computed locally without any external lookup or live data.","failureModes":["More than 200 rows submitted — request rejected due to maxItems constraint","Missing required fields (row_id, dataset_group, date, sample_value, sample_weight) cause validation errors","Invalid date format (not YYYY-MM-DD) triggers pattern mismatch","Numeric values outside ±1,000,000,000,000 range rejected","Empty rows array rejected (minItems: 1)","Payment failure for 0.01 USDC results in 402 response"],"whenToPreferThis":"Choose this endpoint when you have user-supplied tabular sampling data (up to 200 rows) and need both a category frequency report and a weighted mean statistic in a single low-cost call ($0.01 USDC). It is ideal for offline/batch statistical summaries where no live data lookup, prediction, or external enrichment is needed — just local analytics on your own dataset.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-15T12:39:12.804Z","isFirstParty":false,"canonicalSlug":"sampling-observations-category-frequencies-secondary-measure-weighted-03692edd"}