This isn't making any sense to me. I am supposed to decide what the lower and upper class limits are of the first class on a histogram. Easy enough.. except.. the first midpoint is 10000. that would make it's class 5000-15000, and the class width would be 10000. The first class cannot be less than 10000, but the only numbers left are 0-4999. I have read and read my book but it says nowhere of making the first class less than the others. Can you have a negative class that isn't on the graph?