Case Study

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

The Scientific Method

In this case study, you will be following the scientific method to solve the problem. Here, you will test guesses (or hypotheses) using objectively collected data. The scientific method can be decomposed into the following key steps:

1. Define the question to answer, which in this case is what caused the drop in sales of the Bat Scooter after approximately 2 weeks.
2. Perform 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 objective experiment...