YouTube gives you a lot of different kinds of ways to relate to viewers and other YouTube users. You can be friends, subscribe, or just view. When you subscribe to a channel, that channel’s videos show up in a “feed” along with other channels you subscribe to. It’s almost like having your own TV channel programmed to see exactly what you want to see.
So it’s probably good for a channel to have subscribers, right? Random viewers may only watch one of your videos, once. But if someone subscribes to your channel, they might watch more of your videos over time. (Provided people actually view their subscriber feed, which isn’t guaranteed.)
Let’s test this hypothesis. The Media Show’s subscribers went from 100 in January of 2010 to 222 in May of 2010. Take a look at the graphs below. Does it look like the rise in subscribers led to a rise in the basic number of views each time a new video was posted? If there was a rise, how can you tell that subscribers made a difference? Develop alternate hypotheses: What else could be causing a rise in viewers over this time?