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R Data Analysis Cookbook - Second Edition by Kuntal Ganguly

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How to do it...

Read data and replace missing values:

> dat <- read.csv("missing-data.csv", na.strings = "") > dat$Income.imp.mean <- ifelse(is.na(dat$Income),     mean(dat$Income, na.rm=TRUE), dat$Income) 

After this, all the NA values for Income will be the mean value prior to imputation.

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