aggregress: aggregress: A package for regression analysis with aggregated...
In LeeMorinUCF/aggregress: Regression Analysis with Aggregated Data

The aggregress package makes adjustments to the lm object output when the inputted data are in aggregated form. That is, when the data frame has a list of unique values of all variables with the frequencies recorded in a column of weights. The resulting object is indistinguishable from that from the original unaggregated data. It includes adjustments to the statistics and diagnostics.

To quote the help files for the lm function: "Therefore, the sigma estimate and residual degrees of freedom may be suboptimal; in the case of replication weights, even wrong. Hence, standard errors and analysis of variance tables should be treated with care." This packages makes adjustments so that the sigma estimate and residual degrees of freedom are not suboptimal or wrong; they are correct.

LeeMorinUCF/aggregress documentation built on June 30, 2020, 5:06 a.m.