Description Usage Arguments Value See Also Examples
timss.reg performs linear regression analysis (OLS) for an observed depedent variable (NOT for plausible values)
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| y | Label for dependent variable. | 
| x | Data labels of independent variables. | 
| by | The label for the grouping variable, usually the countries (i.e., by="IDCNTRYL"), but could be any other categorical variable. | 
| data | An R object, normally a data frame, containing the data from TIMSS. | 
| export | A logical value. If TRUE, the output is exported to a file in comma-separated value format (.csv) that can be opened from LibreOffice or Excel. | 
| name | The name of the exported file. | 
| folder | The folder where the exported file is located. | 
timss.reg prints a data.frame with regression results (i.e., coefficients, standard errors, t-values, R-squared) and stores different regression output including residuals and replicate coefficients in a list object of class "intsvy.reg".
pirls.reg
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