How to correct this given error? 67 -**The second variable should show the percentage of trans_fat intotal_fat.**168 *** {r}169 1ibrary(tidyverse)170 trans_fat_percent<-fastfood >%171172group_by(restaurant) >Xmutate(trans_fat_percent - trans_fat/total_fat 10)173 ungroupO174 head (trans_fat_percent X select(restaurant, item, trans fat))175#round (trans fat percentstrans_farpercent, 2)176177-Error in useMethod("ungroup") :no applicable method for 'ungroup' applied to an object of class "NULL"

Note: Answer As per problem mention in problem first of all you are calculating percentage , so…

-The second variable should show the percentage of 'trans_fat in 67 total fat.* 68 -*** (r} 69 1ibrary(tidyverse) 170 trans_fat_percent<-fastfood >% 171 172 173 ungroupO 174 head (tr ans_fat_percent X select(restaurant, item, trans fat)) 175 round (trans fat percentStransfat_percant, 2) 176 177 group_by(restaurant) X>X mutate(trans_fat_percent - trans fat/total_fat 10) Error in useMethod("ungroup") : no applicable method for 'ungroup' applied to an object of class "NULL"

-The second variable should show the percentage of 'trans_fat in 67 total fat.* 68 -*** (r} 69 1ibrary(tidyverse) 170 trans_fat_percent<-fastfood >% 171 172 173 ungroupO 174 head (tr ans_fat_percent X select(restaurant, item, trans fat)) 175 round (trans fat percentStransfat_percant, 2) 176 177 group_by(restaurant) X>X mutate(trans_fat_percent - trans fat/total_fat 10) Error in useMethod("ungroup") : no applicable method for 'ungroup' applied to an object of class "NULL"

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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