How to Compute the Cumulative Average in R (Example Code)
This page explains how to calculate the cumulative mean of a data frame column in R.
Introduction of Exemplifying Data
data(iris) # Load iris data head(iris) # Sepal.Length Sepal.Width Petal.Length Petal.Width Species # 1 5.1 3.5 1.4 0.2 setosa # 2 4.9 3.0 1.4 0.2 setosa # 3 4.7 3.2 1.3 0.2 setosa # 4 4.6 3.1 1.5 0.2 setosa # 5 5.0 3.6 1.4 0.2 setosa # 6 5.4 3.9 1.7 0.4 setosa |
data(iris) # Load iris data head(iris) # Sepal.Length Sepal.Width Petal.Length Petal.Width Species # 1 5.1 3.5 1.4 0.2 setosa # 2 4.9 3.0 1.4 0.2 setosa # 3 4.7 3.2 1.3 0.2 setosa # 4 4.6 3.1 1.5 0.2 setosa # 5 5.0 3.6 1.4 0.2 setosa # 6 5.4 3.9 1.7 0.4 setosa
Example: Computing Cumulative Mean of Data Frame Column
cummean_SL <- cumsum(iris$Sepal.Length) / # Calculate cumulative mean of column seq_along(iris$Sepal.Length) head(cummean_SL) # Print head of result # [1] 5.100 5.000 4.900 4.825 4.860 4.950 |
cummean_SL <- cumsum(iris$Sepal.Length) / # Calculate cumulative mean of column seq_along(iris$Sepal.Length) head(cummean_SL) # Print head of result # [1] 5.100 5.000 4.900 4.825 4.860 4.950