{"uid":"cap_iGBiUg6rGQs9Uoh-DKzFN","slug":"assessment-item-observations-secondary-measure-weighted-mean-explicit-98861134","name":"Assessment Item Observations — Secondary-Measure Weighted Mean + Explicit Missing-Value Fill","description":"Assessment item observations — Secondary-measure weighted mean + Explicit missing-value fill: Secondary-measure weighted mean + Explicit missing-value fill for supplied assessment item observations records (correct_responses, attempts). 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-education-02-187?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"rows":{"type":"array","items":{"type":"object","required":["row_id","course_group","date","correct_responses","attempts"],"properties":{"date":{"type":"string","default":"","pattern":"^\\d{4}-\\d{2}-\\d{2}$","maxLength":10},"row_id":{"type":"string","default":"","maxLength":80,"minLength":1},"attempts":{"type":["number","null"],"maximum":1000000000000,"minimum":-1000000000000},"course_group":{"type":"string","default":"","maxLength":80},"correct_responses":{"type":["number","null"],"maximum":1000000000000,"minimum":-1000000000000}},"additionalProperties":false},"default":[{"date":"2026-10-01","row_id":"row-1","attempts":1,"course_group":"group-a","correct_responses":10},{"date":"2026-10-02","row_id":"row-2","attempts":2,"course_group":"group-b","correct_responses":20},{"date":"2026-10-03","row_id":"row-3","attempts":3,"course_group":"group-a","correct_responses":15},{"date":"2026-10-04","row_id":"row-4","attempts":4,"course_group":"group-b","correct_responses":30}],"maxItems":200,"minItems":1},"field":{"enum":["correct_responses","attempts"],"type":"string","default":"correct_responses"},"method":{"enum":["zero","mean","median"],"type":"string","default":"median"}}},"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_tVd00I70zr6L7Rlbat67g","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 a secondary-measure weighted mean and fills missing values in assessment item observation records (correct_responses, attempts) for up to 200 rows, returning 2 analytical reports.","exampleAgentPrompt":"Can you compute the weighted mean of correct_responses for my assessment item data and fill any missing values using median imputation? I have 4 rows across two course groups (group-a and group-b) with dates from 2026-10-01 to 2026-10-04 and attempt counts of 1 through 4.","exampleUseCases":[{"title":"Quiz score weighted mean by course group","prompt":"I have student quiz records with correct_responses and attempts for group-a and group-b over the past week — can you compute the weighted mean of correct_responses and fill any missing values using median for up to 200 rows?"},{"title":"Missing attempt count imputation for assessments","prompt":"My assessment dataset has some null values in the attempts column — can you fill those missing values using the mean method and then compute the secondary-measure weighted mean across all records?"},{"title":"Education analytics report on assessment items","prompt":"Run an analytical report on my assessment item observations — I need the weighted mean for correct_responses with zero-fill for missing values, covering about 150 rows of student data grouped by course section."}],"resultDescription":"Two analytical reports covering: (1) secondary-measure weighted mean of the selected field (correct_responses or attempts) and (2) explicit missing-value fill results using the chosen method (zero, mean, or median), applied to up to 200 supplied assessment item observation rows.","failureModes":["More than 200 rows submitted — request rejected with validation error","Missing required fields (row_id, course_group, date, correct_responses, attempts) — row rejected","Invalid date format (not YYYY-MM-DD) — schema validation failure","Empty rows array — minimum item count not met","Invalid enum value for field or method — schema validation error","Numeric values outside allowed range — rejected by schema constraints"],"whenToPreferThis":"Choose this endpoint when you have tabular assessment item observation data (correct_responses and attempts) that needs both missing-value imputation and a weighted mean computation in a single call, without any external data lookup or prediction. Best suited for offline batch analysis of up to 200 rows of education/quiz data where you want two self-contained analytical reports at low cost.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T12:49:34.606Z","isFirstParty":false,"canonicalSlug":"assessment-item-observations-secondary-measure-weighted-mean-explicit-98861134"}