Dot Plot Generator

Below are the scores for the first quiz in your class.
1) Drag the "Items" slider and populate the dot-plot. What trends do you see? 2) Slide "Items" back to zero. Check the Median and Mean boxes. Slide the "Items" so "Items=2", why does the Median and Mean outputs make sense? 3) Slide "Items" half way so "Items=12" record the Median and the Mean. Then slide "Items" to "Items=24" why to they both increase?