Correlación y Regresión
Correlation & Regression
This section contains the following items. Details for each can be found by scrolling down the page.
|°||Basic Linear Correlation and Regression|
|°||Matrix of Intercorrelations|
|°||0.95 and 0.99 Confidence Intervals for r|
|°||Estimating the Population Value of rho on the Basis of Several Observed Sample Values of r|
|°||Test for the Heterogeneity of Several Values of r|
|°||The Significance of an Observed Value of r|
|°||Significance of the Difference between Two Independent Values of r|
|°||Significance of the Difference between an Observed Value of r and a Hypothetical Value of rho|
|°||First- and Second-Order Partial Correlation|
|°||Rank Order Correlation|
|°||Phi Coefficient of Association|
|°||Point Biserial Coefficient of Association|
|°||Correlation for Unordered Pairs: |
Intraclass Correlation and Eta2
|°||Simple Logistic Regression|
The following pages calculate r, r2, regression constants, Y residuals, and standard error of estimate for a set of N bivariate values of X and Y, and perform a t-test for the significance of the obtained value of r.
Data-Import Version. Allows for import of raw data from a spreadsheet; for samples of any size, large or small.
|Direct-Entry Version. Values of X and Y are entered directly into individual data cells. This page will also work with samples of any size, though it will be rather unwieldy with samples larger than about N=50. As the page opens, you will be prompted to enter the value of N.|
Version 1 (data-import format). For any number of variables and any number of measures per variable.
|Version 2 (direct-entry format for small samples). For up to five variables; as the page opens, you will be prompted to enter the number of measures per variable.|
Basic multiple regression analysis for the case where there are several independent or predictor variables, X1, X2, etc., and one dependent or criterion variable, Y. Requires import of data from a spreadsheet.
Test for the Heterogeneity of Several Values of r
|An observed Value of r and a Hypothetical Value of rho|
|[Both are based on the Fisher r-to-z transformation.]|
For Three Intercorrelated Variables: first-order partial correlations
|For Four Intercorrelated Variables: first- and second-order partial correlations|