Bar graph because a stem and leaf plot is used when there are big numbers and also when there is a lot of numbers. It CANNOT be used for comparing different data.
Bar graphs are used to compare data. To be more specific, you should use a double bar graph because:
Double bar graphs have 2 or more bars for compariong
Bar graphs are usually used to show length
Answer: Double bar graph (bar graph)
Hope this helps :)
