linear_systematic: Find the systematic component in the linear form for fitted...

Description Usage Arguments Value Source Examples

Description

Find the systematic component in the linear form for fitted values in across each simulation (note: largely for internal use by qi_builder)

Usage

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linear_systematic(b_sims, newdata, inc_intercept = TRUE)

Arguments

b_sims

a data frame created by b_sim of simulated coefficients.

newdata

a data frame of fitted values with column names corresponding to variable names in b_sims. Variables in b_sim not present in newdata will be treated as fitted at 0. Interactions will automatically be found if they were entered into to the model using the * operator.

inc_intercept

logical whether to include the intercept in the lineary systematic component.

Value

A data frame fitted values supplied in newdata and associated linear systematic component estimates for all simulationed coefficient estimates. The linear systematic components are included in a column named ls_.

Source

King, Gary, Michael Tomz, and Jason Wittenberg. 2000. "Making the Most of Statistical Analyses: Improving Interpretation and Presentation." American Journal of Political Science 44(2): 341-55.

Examples

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library(car)

# Estimate model
m1 <- lm(prestige ~ education + type, data = Prestige)

# Create fitted values
fitted_df <- expand.grid(education = 6:16, typewc = 1)

# Simulate coefficients
m1_sims <- b_sim(m1, nsim = 1000)

# Find linear systematic component for fitted values
ls <- linear_systematic(b_sims = m1_sims, newdata = fitted_df)


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