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- Read in drug_cos.csv as a tibble and assign to drug_cos. Library (tidyverse) drug_cos %>% filter ( year == - The mean grossmargin for 2016

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- Read in drug_cos.csv as a tibble and assign to drug_cos. Library (tidyverse) drug_cos %>% filter ( year == - The mean grossmargin for 2016 is Median for year - Find the median grossmargin for each year and call the variable median_grossmargin - Extract the median for 2016 drug_cos %

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