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The Tetracycline2 data frame has 40 rows and 4 columns.
Tetracycline2
This data frame contains the following columns:
a numeric vector
an ordered factor with levels 4 < 5 < 2 < 1 < 3
4
5
2
1
3
a factor with levels Berkmycin tetramycin
Berkmycin
tetramycin
# NOT RUN { str(Tetracycline2) # }
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