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  2. Longitudinal study - Wikipedia

    en.wikipedia.org/wiki/Longitudinal_study

    A longitudinal study (or longitudinal survey, or panel study) is a research design that involves repeated observations of the same variables (e.g., people) over long periods of time (i.e., uses longitudinal data). It is often a type of observational study, although it can also be structured as longitudinal randomized experiment. [1]

  3. Repeated measures design - Wikipedia

    en.wikipedia.org/wiki/Repeated_measures_design

    Repeated measures design is a research design that involves multiple measures of the same variable taken on the same or matched subjects either under different conditions or over two or more time periods. [1] For instance, repeated measurements are collected in a longitudinal study in which change over time is assessed.

  4. Directional-change intrinsic time - Wikipedia

    en.wikipedia.org/wiki/Directional-change...

    The timeline contains intervals of equal length in physical time and the length of the intervals based on the directional-change operator. The directional-change intrinsic time operator was developed for the analysis of financial market data series. It is an alternative methodology to the concept of continuous time. [1]

  5. Research design - Wikipedia

    en.wikipedia.org/wiki/Research_design

    The choice of how to group participants depends on the research hypothesis and on how the participants are sampled.In a typical experimental study, there will be at least one "experimental" condition (e.g., "treatment") and one "control" condition ("no treatment"), but the appropriate method of grouping may depend on factors such as the duration of measurement phase and participant ...

  6. List of research methods in biology - Wikipedia

    en.wikipedia.org/wiki/List_of_research_methods...

    A research design that involves multiple measures of the same variable taken on the same or matched subjects either under different conditions or over two or more time periods. [1] Paired t-test, Wilcoxon signed-rank test

  7. Observational methods in psychology - Wikipedia

    en.wikipedia.org/wiki/Observational_Methods_in...

    These time intervals can be chosen randomly or systematically. If a researcher chooses to use systematic time sampling, the information obtained would only generalize to the one time period in which the observation took place. In contrast, the goal of random time sampling would be to be able to generalize across all times of observation ...

  8. The Best Things Our Editors Ate This Year - AOL

    www.aol.com/best-things-editors-ate-202209192.html

    Beside the sizzling burger, a little foil packet of sliced onions bided its time, getting a squirt or two of probably Worcestershire. Served on a styrofoam plate with chips and a beer, it was ...

  9. Interval estimation - Wikipedia

    en.wikipedia.org/wiki/Interval_estimation

    In statistics, interval estimation is the use of sample data to estimate an interval of possible values of a parameter of interest. This is in contrast to point estimation, which gives a single value. [1] The most prevalent forms of interval estimation are confidence intervals (a frequentist method) and credible intervals (a Bayesian method). [2]