I had the kids work in separate areas so no one's candy got mixed up with anyone else's. Each kid dumped their candy out into a pile. I asked them to make some hypothesis while observing the pile: "Which type of candy do you think you have the most of? The least?"
Next, we used the ruler do draw a graph on the paper. My kids (ages 6 and 8) wrote numbers on the left side of the graph.
Then we analyzed our data: I asked them questions, like:
"Which candy did you have the most of?"
"Which candy did you have the least of?"
"Did you have the same amount of any two or more types of candy?"
"Were your hypotheses correct? If not, what is different now that you see the results on the graph?"
Then, of course, we each had a piece of candy, because you can only work with the stuff for so long without sampling some, right? Happy Halloween!