Welcome to the fourth and final installment of our series on designing and implementing a successful marketing experiment. We have already covered how to formulate a strong hypothesis, control for natural variation between groups, and how to draw valid conclusions from our experimental results. Today, we are going to discuss how you can use some statistical tools to gauge how meaningful your results are. However, what does it mean for a result to be meaningful?
Two weeks into the month-long campaign the Pebble has become the highest grossing Kickstarter project of all time. One of us finally broke down and kicked-in, and we started wondering how many will they sell when the campaign finishes.