I'm struggling with making transparent summary of minimum and maximum prices in a given year. Here is my data frame:
My vision was to make df with years (2006-2019), region where price was highest in each year and region where price was lowest in each year (for example: in 2018 highest price was 110 in Region 1 and lowest was 105 in Region 2), then make graph with 2 bars (lowest price and highest) for each year.