Case Study

Throughout this chapter, we will cover the following case study. The new ZoomZoom Bat Scooter is now available for sale exclusively through its website. Sales are looking good, but suddenly, pre-orders start plunging by 20% after a couple of weeks. What's going on? As the best data analyst at ZoomZoom, it's been assigned to you to figure it out.

Scientific Method

In this case study, we will be following the scientific method to help solve our problem, which, at its heart, is about testing guesses (or hypotheses) using objectively collected data. We can decompose the scientific method into the following key steps:

1. Define the question to answer what caused the drop-in sales of the Bat Scooter after approximately 2 weeks.
2. Complete background research to gather sufficient information to propose an initial hypothesis for the event or phenomenon.
3. Construct a hypothesis to explain the event or answer the question.
4. Define and execute an...