"Chapman-Robbins bound" meaning in English

{
  "etymology_text": "Named after Douglas Chapman and Herbert Robbins, who discovered it in 1951, independently of the original (1950) discovery by John Hammersley.",
  "forms": [
    {
      "form": "Chapman-Robbins bounds",
      "tags": [
        "plural"
      ]
    }
  ],
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      "expansion": "Chapman-Robbins bound (plural Chapman-Robbins bounds)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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          "kind": "other",
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            "Entries with incorrect language header",
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Statistics",
          "orig": "en:Statistics",
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            "Mathematics",
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      ],
      "glosses": [
        "A lower bound on the variance of estimators of a deterministic parameter; a generalization of the Cramér-Rao bound, it is both tighter and more widely applicable, but usually harder to compute."
      ],
      "id": "en-Chapman-Robbins_bound-en-noun-bR157nL4",
      "links": [
        [
          "statistics",
          "statistics"
        ],
        [
          "variance",
          "variance"
        ],
        [
          "estimator",
          "estimator"
        ],
        [
          "deterministic",
          "deterministic"
        ],
        [
          "parameter",
          "parameter"
        ],
        [
          "generalization",
          "generalization"
        ],
        [
          "Cramér-Rao bound",
          "Cramér-Rao bound"
        ]
      ],
      "raw_glosses": [
        "(statistics) A lower bound on the variance of estimators of a deterministic parameter; a generalization of the Cramér-Rao bound, it is both tighter and more widely applicable, but usually harder to compute."
      ],
      "synonyms": [
        {
          "word": "Hammersley-Chapman-Robbins bound"
        }
      ],
      "topics": [
        "mathematics",
        "sciences",
        "statistics"
      ],
      "wikipedia": [
        "Chapman-Robbins bound"
      ]
    }
  ],
  "word": "Chapman-Robbins bound"
}

{
  "etymology_text": "Named after Douglas Chapman and Herbert Robbins, who discovered it in 1951, independently of the original (1950) discovery by John Hammersley.",
  "forms": [
    {
      "form": "Chapman-Robbins bounds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Chapman-Robbins bound (plural Chapman-Robbins bounds)",
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    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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    {
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        "English countable nouns",
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        "en:Statistics"
      ],
      "glosses": [
        "A lower bound on the variance of estimators of a deterministic parameter; a generalization of the Cramér-Rao bound, it is both tighter and more widely applicable, but usually harder to compute."
      ],
      "links": [
        [
          "statistics",
          "statistics"
        ],
        [
          "variance",
          "variance"
        ],
        [
          "estimator",
          "estimator"
        ],
        [
          "deterministic",
          "deterministic"
        ],
        [
          "parameter",
          "parameter"
        ],
        [
          "generalization",
          "generalization"
        ],
        [
          "Cramér-Rao bound",
          "Cramér-Rao bound"
        ]
      ],
      "raw_glosses": [
        "(statistics) A lower bound on the variance of estimators of a deterministic parameter; a generalization of the Cramér-Rao bound, it is both tighter and more widely applicable, but usually harder to compute."
      ],
      "synonyms": [
        {
          "word": "Hammersley-Chapman-Robbins bound"
        }
      ],
      "topics": [
        "mathematics",
        "sciences",
        "statistics"
      ],
      "wikipedia": [
        "Chapman-Robbins bound"
      ]
    }
  ],
  "word": "Chapman-Robbins bound"
}