diff --git a/R/kaplan.plot.R b/R/kaplan.plot.R
index 79738df..95aa7d8 100644
--- a/R/kaplan.plot.R
+++ b/R/kaplan.plot.R
@@ -44,7 +44,7 @@
 #' @param events.to.plot Vector of events to be plotted.  "All" means that all
 #' events are plotted.
 #' @param sim.data The simulated data file.  Should be a table file with one
-#' header row and have, at least, columns with headers coresponding to
+#' header row and have, at least, columns with headers corresponding to
 #' \code{x}, \code{y}, \code{id}, \code{by} (if used), \code{nsim.lab} and
 #' \code{sim.evct.lab}.
 #' @param sim.zip.file The \code{sim.data} can be in \.zip format and xpose
diff --git a/R/make.sb.data.R b/R/make.sb.data.R
index 0763c89..99011c6 100644
--- a/R/make.sb.data.R
+++ b/R/make.sb.data.R
@@ -30,7 +30,7 @@
 #' 
 #' 
 #' @param data Data set to transform.
-#' @param idv the idependent variable.
+#' @param idv the independent variable.
 #' @param dv the dependent variable.
 #' @param nbins the number of bins.
 #' @param by Conditioning variable.
diff --git a/man/kaplan.plot.Rd b/man/kaplan.plot.Rd
index f00c78f..812c75a 100644
--- a/man/kaplan.plot.Rd
+++ b/man/kaplan.plot.Rd
@@ -46,7 +46,7 @@ the data set.}
 events are plotted.}
 
 \item{sim.data}{The simulated data file.  Should be a table file with one
-header row and have, at least, columns with headers coresponding to
+header row and have, at least, columns with headers corresponding to
 \code{x}, \code{y}, \code{id}, \code{by} (if used), \code{nsim.lab} and
 \code{sim.evct.lab}.}
 
diff --git a/man/make.sb.data.Rd b/man/make.sb.data.Rd
index 3535527..0ba3f9c 100644
--- a/man/make.sb.data.Rd
+++ b/man/make.sb.data.Rd
@@ -9,7 +9,7 @@ make.sb.data(data, idv, dv, nbins = 6, by = NULL, by.nbins = 6, ...)
 \arguments{
 \item{data}{Data set to transform.}
 
-\item{idv}{the idependent variable.}
+\item{idv}{the independent variable.}
 
 \item{dv}{the dependent variable.}