Era necessário definir algo mais?
combined_expanded['incidence_ratio']= combined_expanded ['confirmed']/combined_expanded['PopTotal']
combined_expanded.head(10)
NameError Traceback (most recent call last) in () ----> 1 combined_expanded['incidence_ratio']= combined_expanded ['confirmed']/combined_expanded['PopTotal'] 2 combined_expanded.head(10)
NameError: name 'combined_expanded' is not defined