"posterior probability" meaning in English

{
  "forms": [
    {
      "form": "posterior probabilities",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "args": {
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      "expansion": "posterior probability (countable and uncountable, plural posterior probabilities)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "antonyms": [
        {
          "word": "prior"
        },
        {
          "word": "prior probability"
        }
      ],
      "categories": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
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          "langcode": "en",
          "name": "Statistics",
          "orig": "en:Statistics",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "The probability of an event given the knowledge of occurrence of other events that bear on it: P( A | B ) as contrasted to P( A ), where A is the sought event and B is the sign or symptom event."
      ],
      "id": "en-posterior_probability-en-noun-yiyhW9D0",
      "links": [
        [
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        [
          "event",
          "event"
        ]
      ],
      "raw_glosses": [
        "(statistics) The probability of an event given the knowledge of occurrence of other events that bear on it: P( A | B ) as contrasted to P( A ), where A is the sought event and B is the sign or symptom event."
      ],
      "synonyms": [
        {
          "word": "posterior"
        }
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "mathematics",
        "sciences",
        "statistics"
      ]
    }
  ],
  "word": "posterior probability"
}

{
  "forms": [
    {
      "form": "posterior probabilities",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
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      },
      "expansion": "posterior probability (countable and uncountable, plural posterior probabilities)",
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    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "antonyms": [
        {
          "word": "prior"
        },
        {
          "word": "prior probability"
        }
      ],
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        "English nouns",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Statistics"
      ],
      "glosses": [
        "The probability of an event given the knowledge of occurrence of other events that bear on it: P( A | B ) as contrasted to P( A ), where A is the sought event and B is the sign or symptom event."
      ],
      "links": [
        [
          "statistics",
          "statistics"
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          "event"
        ]
      ],
      "raw_glosses": [
        "(statistics) The probability of an event given the knowledge of occurrence of other events that bear on it: P( A | B ) as contrasted to P( A ), where A is the sought event and B is the sign or symptom event."
      ],
      "synonyms": [
        {
          "word": "posterior"
        }
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "mathematics",
        "sciences",
        "statistics"
      ]
    }
  ],
  "word": "posterior probability"
}