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  2. Unit of observation - Wikipedia

    en.wikipedia.org/wiki/Unit_of_observation

    The unit of observation should not be confused with the unit of analysis.A study may have a differing unit of observation and unit of analysis: for example, in community research, the research design may collect data at the individual level of observation but the level of analysis might be at the neighborhood level, drawing conclusions on neighborhood characteristics from data collected from ...

  3. Glossary of probability and statistics - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_probability...

    Standard for structuring data such that "each variable is a column, each observation is a row, and each type of observational unit is a table". It is equivalent to Codd's third normal form. [4] time domain time series time series analysis time series forecasting treatments Variables in a statistical study that are conceptually manipulable.

  4. Panel data - Wikipedia

    en.wikipedia.org/wiki/Panel_data

    Another way to structure panel data would be the wide format where one row represents one observational unit for all points in time (for the example, the wide format would have only two (first example) or three (second example) rows of data with additional columns for each time-varying variable (income, age).

  5. Unit of analysis - Wikipedia

    en.wikipedia.org/wiki/Unit_of_analysis

    The unit of analysis is the entity that frames what is being looked at in a study, or is the entity being studied as a whole. [1] In social science research, at the macro level, the most commonly referenced unit of analysis, considered to be a society is the state (polity) (i.e. country). At meso level, common units of observation include ...

  6. Statistical unit - Wikipedia

    en.wikipedia.org/wiki/Statistical_unit

    A simple unit is one which represents a single condition without any qualification. A composite unit is one which is formed by adding a qualification word or phrase to a simple unit. For example, labour-hours and passenger-kilometer. Unit of analysis and interpretation: units in terms of which statistical data are analyzed and interpreted.

  7. Observational study - Wikipedia

    en.wikipedia.org/wiki/Observational_study

    Anthropological survey paper from 1961 by Juhan Aul from University of Tartu who measured about 50 000 people. In fields such as epidemiology, social sciences, psychology and statistics, an observational study draws inferences from a sample to a population where the independent variable is not under the control of the researcher because of ethical concerns or logistical constraints.

  8. Fixed vs. variable interest rates: How these rate types work ...

    www.aol.com/finance/fixed-vs-variable-interest...

    How variable rate caps work. In many cases, lenders set caps on variable-rate products. This was designed to protect consumer borrowers from the kind of runaway interest the country saw during the ...

  9. Observation - Wikipedia

    en.wikipedia.org/wiki/Observation

    Observation in the natural sciences [1] is an act or instance of noticing or perceiving [2] and the acquisition of information from a primary source. In living beings, observation employs the senses. In science, observation can also involve the perception and recording of data via the use of scientific instruments. The term may also refer to ...