What information might help you decide if the variance in amount of rain in Atlanta is unusual?

This is an assignment for my Environmental Science class. First, start by watching the TEDed video at: https://ed.ted.com/lessons/how-to-spot-a-misleading-graph-lea-gaslowitz
Then answer to the following questions.
Question 1: Analyze the graph on Environmental Waste.
1a. Explain at least three problems with this graph.
1b. In what year was the amount of waste trashed closest to the amount recycled?
Question 2: Analyze the graph on rainfall in Atlanta, GA.
2a. The two graphs above show very different pictures of the rainfall in Atlanta. Explain how each graph is distorted.
2b. What information might help you decide if the variance in amount of rain in Atlanta is unusual? This is an open ended question designed to get you thinking like a scientist. If you were a senior scientist and your lab assistant brought you those graphs. What would you tell them to do to them to make them clearer and easier to understand?