"tetrachoric" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "tetra-",
        "3": "grc:χῶρος",
        "4": "-ic"
      },
      "expansion": "tetra- + Ancient Greek χῶρος (khôros) + -ic",
      "name": "af"
    }
  ],
  "etymology_text": "From tetra- + Ancient Greek χῶρος (khôros) + -ic. First used in statistical theory in the early 20th century.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "tetrachoric (not comparable)",
      "name": "en-adj"
    }
  ],
  "hyphenations": [
    {
      "parts": [
        "tet",
        "ra",
        "chor",
        "ic"
      ]
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with tetra-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -ic",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Statistics",
          "orig": "en:Statistics",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
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            [
              40,
              51
            ]
          ],
          "ref": "2015 July 9, “Social Participation and Disaster Risk Reduction Behaviors in Tsunami Prone Areas”, in PLOS ONE, →DOI:",
          "text": "Each rho (ρ) represents the conditional tetrachoric correlation for each pair of outcomes, measuring the extent to which the two outcomes would covary if unobserved characteristics of an individual were indeed observed.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Between two dichotomous variables"
      ],
      "id": "en-tetrachoric-en-adj-oadH1MVm",
      "links": [
        [
          "statistics",
          "statistics"
        ],
        [
          "dichotomous",
          "dichotomous"
        ],
        [
          "variable",
          "variable"
        ]
      ],
      "raw_glosses": [
        "(statistics, of a correlation) Between two dichotomous variables"
      ],
      "raw_tags": [
        "of a correlation"
      ],
      "related": [
        {
          "word": "polychoric"
        }
      ],
      "tags": [
        "not-comparable"
      ],
      "topics": [
        "mathematics",
        "sciences",
        "statistics"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌtɛtrəˈkɔːɹɪk/"
    }
  ],
  "word": "tetrachoric"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "tetra-",
        "3": "grc:χῶρος",
        "4": "-ic"
      },
      "expansion": "tetra- + Ancient Greek χῶρος (khôros) + -ic",
      "name": "af"
    }
  ],
  "etymology_text": "From tetra- + Ancient Greek χῶρος (khôros) + -ic. First used in statistical theory in the early 20th century.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "tetrachoric (not comparable)",
      "name": "en-adj"
    }
  ],
  "hyphenations": [
    {
      "parts": [
        "tet",
        "ra",
        "chor",
        "ic"
      ]
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "related": [
    {
      "word": "polychoric"
    }
  ],
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms derived from Ancient Greek",
        "English terms prefixed with tetra-",
        "English terms suffixed with -ic",
        "English terms with quotations",
        "English uncomparable adjectives",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Statistics"
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          "bold_text_offsets": [
            [
              40,
              51
            ]
          ],
          "ref": "2015 July 9, “Social Participation and Disaster Risk Reduction Behaviors in Tsunami Prone Areas”, in PLOS ONE, →DOI:",
          "text": "Each rho (ρ) represents the conditional tetrachoric correlation for each pair of outcomes, measuring the extent to which the two outcomes would covary if unobserved characteristics of an individual were indeed observed.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Between two dichotomous variables"
      ],
      "links": [
        [
          "statistics",
          "statistics"
        ],
        [
          "dichotomous",
          "dichotomous"
        ],
        [
          "variable",
          "variable"
        ]
      ],
      "raw_glosses": [
        "(statistics, of a correlation) Between two dichotomous variables"
      ],
      "raw_tags": [
        "of a correlation"
      ],
      "tags": [
        "not-comparable"
      ],
      "topics": [
        "mathematics",
        "sciences",
        "statistics"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌtɛtrəˈkɔːɹɪk/"
    }
  ],
  "word": "tetrachoric"
}