"demographics" meaning in English

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          "ref": "2020 June 3, Sam Mullins discusses with Stefanie Foster, “LTM: a new chapter begins at 40”, in Rail, page 53",
          "text": "Every museum has to wrestle with the differing interests and needs of the varied demographics of its visitors - and none more so than the LTM [London Transport Museum], with its mix of tourists (both domestic and foreign) seeking an 'experience', transport enthusiasts indulging their passion, and families looking for education and entertainment for their children.",
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        "The characteristics of human populations for purposes of social studies."
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          "characteristics",
          "characteristics"
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          "human",
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          "population",
          "population"
        ],
        [
          "social",
          "social"
        ],
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          "studies",
          "studies"
        ]
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        {
          "word": "demography"
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        {
          "word": "demographic"
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          "word": "demographer"
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  "word": "demographics"
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      "word": "demographic"
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      ],
      "glosses": [
        "The characteristics of human populations for purposes of social studies."
      ],
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          "population",
          "population"
        ],
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          "social",
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