{
  "name": "BrainiLab recorded quiz rounds: October–November 2026",
  "capturedAt": "2026-11-10T15:06:30.927227+00:00",
  "periodUtc": {
    "start": "2026-10-19",
    "endExclusive": "2026-11-10"
  },
  "selection": "Completed website game sessions with one recorded result, selected by completion time. Excludes known administration accounts, records without verified answers and invalid verified totals. Repeat rounds count separately.",
  "coverage": {
    "recorded": 227,
    "excluded_admin": 34,
    "excluded_invalid": 0,
    "excluded_unverified": 1
  },
  "total": {
    "rounds": 192,
    "profiles": 57,
    "gameTypes": 15
  },
  "games": [
    {
      "game": "generalknowledge",
      "rounds": 65,
      "profiles": 24,
      "countedAnswers": 1300,
      "correctAnswers": 960,
      "meanRoundAccuracyPercent": 73.8,
      "medianRoundAccuracyPercent": 80
    },
    {
      "game": "mathrush",
      "rounds": 36,
      "profiles": 11,
      "countedAnswers": 593,
      "correctAnswers": 550,
      "meanRoundAccuracyPercent": 91.9,
      "medianRoundAccuracyPercent": 92.8
    },
    {
      "game": "oddoneout",
      "rounds": 11,
      "profiles": 10,
      "countedAnswers": 110,
      "correctAnswers": 81,
      "meanRoundAccuracyPercent": 73.6,
      "medianRoundAccuracyPercent": 80
    }
  ],
  "generalKnowledgeLevels": [
    {
      "difficulty": "easy",
      "rounds": 26,
      "countedAnswers": 520,
      "correctAnswers": 430,
      "profiles": 18
    },
    {
      "difficulty": "medium",
      "rounds": 28,
      "countedAnswers": 560,
      "correctAnswers": 403,
      "profiles": 16
    }
  ],
  "repeatPlay": {
    "profiles": 57,
    "oneRound": 34,
    "twoOrMoreRounds": 23,
    "twoOrMoreGameTypes": 12
  },
  "method": {
    "groupMinimumProfiles": 10,
    "median": "Middle round accuracy after sorting; average of the two middle values for an even number of rounds.",
    "limitations": [
      "This sample counts recorded completions, not starts, visits, or all guests.",
      "A profile can contribute multiple rounds and may appear in more than one game or difficulty.",
      "Excludes known administration accounts; other test use may remain.",
      "The dates and selection differ from the first-200 snapshot; neither is a matched sample or a measure of growth, retention, or learning gains."
    ]
  },
  "privacy": "Aggregate counts only; no raw play records, individual scores, timestamps, identifiers or answers."
}