## How to Replace NA’s with the Mean in R [Examples]

In this article, we demonstrate how to replace missing values in R (by group).

## 3 Ways to Remove Duplicate Column Names in R [Examples]

In this article, we disucss how to remove duplicate column names from a data frame in R.

## 3 Ways to Find & Remove Duplicated Columns in R [Examples]

In this article, we discuss 3 ways to find and remove duplicated columns from an R data frame.

## 3 Easy Ways to Test for Heteroscedasticity in R [Examples]

In this article, we discuss how to check for heteroscedasticity among the residuals of a regression model in R.

## How to Duplicate Columns in R [Examples]

In this article, we discuss several ways to duplicate or replicate columns in a data frame.

## 3 Easy Ways to Repeat Rows in R [Examples]

In this article, we discuss 3 ways to repeat rows from a data frame.

## 3 Easy Ways to Count the Number of NA’s per Row in R [Examples]

In this article, we discuss 3 method to count the number of missing values per row.

## 3 Ways to Find Columns with NA’s in R [Examples]

In this article, we discuss 3 ways to find columns with missing values in a data frame.

## How to Calculate the Net Present Value (NPV) in R [Examples]

In this article, we discuss how to calculate the Net Present Value in R

## 3 Ways to Replace NA’s with Zeros in R [Examples]

In this article, we discuss 3 ways to replace missing values with zeros.