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R dplyr summarize() Function

R dplyr::summarise() or summarize() Function

The dplyr summarise()(or summarize()) function aggregates data into a single summary value for each group or …

Counting Observations Conditionally in R Data Frame

How to Count Values in Column with Condition in R Data Frame

Counting conditionally in the data frame means counting the number of rows that meet specific …

Counting unique observations by single or multiple groups in R

How to Count Unique Values by Group in R

What do you mean by counting unique values by group? Well, it means you divide …

Calculating percentage by group in R data frame

How to Calculate Percentage by Group in R Data Frame

To calculate the percentage by the group in R, you need to combine various dplyr …

Calculate sum by single or multiple groups in R

How to Calculate the Sum by Group in R Data Frame

In R, you can calculate the sum by group using the base aggregate(), dplyr’s group_by() …

R mean by single or mutiple groups

How to Calculate the Mean by Group in R Data Frame

What does it mean when we say “mean by group”? It means grouping the data …