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  2. Detrended correspondence analysis - Wikipedia

    en.wikipedia.org/wiki/Detrended_correspondence...

    Detrended correspondence analysis (DCA) is a multivariate statistical technique widely used by ecologists to find the main factors or gradients in large, species-rich but usually sparse data matrices that typify ecological community data. DCA is frequently used to suppress artifacts inherent in most other multivariate analyses when applied to ...

  3. Survey data collection - Wikipedia

    en.wikipedia.org/wiki/Survey_data_collection

    The survey, form, app or collection tool is on a mobile device such as a smart phone or a tablet. These devices offer innovative ways to gather data, and eliminate the laborious "data entry" (of paper form data into a computer), which delays data analysis and understanding.

  4. Data clarification form - Wikipedia

    en.wikipedia.org/wiki/Data_clarification_form

    A data clarification form (DCF) [1] or data query form is a questionnaire specifically used in clinical research. The DCF is the primary data clarification tool from the trial sponsor or contract research organization (CRO) towards the investigator to clarify discrepancies and ask the investigator for clarification. The DCF is part of the data ...

  5. Template:Frequency - Wikipedia

    en.wikipedia.org/wiki/Template:Frequency

    This template is used on approximately 3,500 pages and changes may be widely noticed. Test changes in the template's /sandbox or /testcases subpages, or in your own user subpage . Consider discussing changes on the talk page before implementing them.

  6. Directional component analysis - Wikipedia

    en.wikipedia.org/wiki/Directional_component_analysis

    Directional component analysis (DCA) [1] [2] [3] is a statistical method used in climate science for identifying representative patterns of variability in space-time data-sets such as historical climate observations, [1] weather prediction ensembles [2] or climate ensembles.

  7. Mixed-data sampling - Wikipedia

    en.wikipedia.org/wiki/Mixed-data_sampling

    The MIDAS can also be used for machine learning time series and panel data nowcasting. [6] [7] The machine learning MIDAS regressions involve Legendre polynomials.High-dimensional mixed frequency time series regressions involve certain data structures that once taken into account should improve the performance of unrestricted estimators in small samples.

  8. Data collection - Wikipedia

    en.wikipedia.org/wiki/Data_collection

    Data collection or data gathering is the process of gathering and measuring information on targeted variables in an established system, which then enables one to answer relevant questions and evaluate outcomes. Data collection is a research component in all study fields, including physical and social sciences, humanities, [2] and business ...

  9. Template:Frequency list - Wikipedia

    en.wikipedia.org/wiki/Template:Frequency_list

    To change this template's initial visibility, the |state= parameter may be used: {{Frequency list | state = collapsed}} will show the template collapsed, i.e. hidden apart from its title bar. {{Frequency list | state = expanded}} will show the template expanded, i.e. fully visible.