### plyr

#### Frequency table in R

I'm battling with something that I think should be so simple! I have researched frequency tables in R and can't figure out what to do. I have a data set with different questionnaires within this data set. I.e., The first questionnaire is made up of 10 items, and I have a separate column for each item/variable, i.e. Question 1, Question 2, Question 3 etc will each have it's own column. Within each column, there are 400 responses (i.e., participants) where each participant gives a response of 0,1, or 2. All I want to do, is generate a frequency count on all variables (i.e., Question 1, Question 2, Question 3 etc) so that I get a summary for all variables - for example: "Question 1" 0 = 100 1 = 200 2 = 97 NA = 3 Total = 400 How do I generate this in a simple, neat table?

df #the name of your raw table table(df$columnName) #This command should create the table for you if you also want to see a total on the end, you can do this: exampleTable <- table(df$columnName) exampleTable <- cbind(exampleTable, Total = rowSums(exampleTable))

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