QUESTIONS If you start with this data frame: venue ation rating average cost "Einstein Bros. "Engineering 4 "Chipotle" Johnson "Steak and Shake" Johnson "Southside" Southside "Chick-fil-a" "SUB 1" U which dply function would you use to generate this dataframe as output: location average rating "Engineering"||4 Johnson" "Southside Hint: the data might have to be grouped by another variable first... summarize arrange O filter select mutate