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  2. Exploratory factor analysis - Wikipedia

    en.wikipedia.org/wiki/Exploratory_factor_analysis

    EFA is a technique within factor analysis whose overarching goal is to identify the underlying relationships between measured variables. [1] It is commonly used by researchers when developing a scale (a scale is a collection of questions used to measure a particular research topic) and serves to identify a set of latent constructs underlying a ...

  3. File:Identifying-acuities.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Identifying-acuities.pdf

    Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.

  4. Variable and attribute (research) - Wikipedia

    en.wikipedia.org/wiki/Variable_and_attribute...

    A variable is a logical set of attributes. [1] Variables can "vary" – for example, be high or low. [ 1 ] How high, or how low, is determined by the value of the attribute (and in fact, an attribute could be just the word "low" or "high"). [ 1 ] (

  5. Identifiability - Wikipedia

    en.wikipedia.org/wiki/Identifiability

    where (ε,η,x*) are jointly normal independent random variables with zero expected value and unknown variances, and only the variables (x,y) are observed. Then this model is not identifiable, [ 4 ] only the product βσ² ∗ is (where σ² ∗ is the variance of the latent regressor x* ).

  6. Functional behavior assessment - Wikipedia

    en.wikipedia.org/wiki/Functional_behavior_assessment

    Functional behavior assessment (FBA) is an ongoing process of collecting information with a goal of identifying the environmental variables that control a problem or target behavior. The purpose of the assessment is to prove and aid the effectiveness of the interventions or treatments used to help eliminate the problem behavior.

  7. Scree plot - Wikipedia

    en.wikipedia.org/wiki/Scree_plot

    A sample scree plot produced in R.The Kaiser criterion is shown in red.. In multivariate statistics, a scree plot is a line plot of the eigenvalues of factors or principal components in an analysis. [1]

  8. Controlling for a variable - Wikipedia

    en.wikipedia.org/wiki/Controlling_for_a_variable

    To identify the control variables needed here, one could ask what other variables determine not only someone's life satisfaction but also their age. Many other variables determine life satisfaction. But no other variable determines how old someone is (as long as they remain alive). (All people keep getting older, at the same rate, no matter ...

  9. Dependent and independent variables - Wikipedia

    en.wikipedia.org/wiki/Dependent_and_independent...

    A variable is considered dependent if it depends on an independent variable. Dependent variables are studied under the supposition or demand that they depend, by some law or rule (e.g., by a mathematical function), on the values of other variables. Independent variables, in turn, are not seen as depending on any other variable in the scope of ...