boxplot - Box plotting in R? -

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i have data looks this: data r

i want create side-by-side box plot comparing agecat , ttscore. love have ttscore on y-axis values 0-5 , on x-axis have different values of agecat a, b, c , d each representing age group.

help appreciated, thank you!

try this:

boxplot(ttscore ~ agecat,df)

assumption: df name of dataset


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