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The Applied SQL Data Analytics Workshop

You're reading from   The Applied SQL Data Analytics Workshop Develop your practical skills and prepare to become a professional data analyst

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Product type Paperback
Published in Feb 2020
Publisher Packt
ISBN-13 9781800203679
Length 484 pages
Edition 2nd Edition
Languages
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Authors (3):
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Upom Malik Upom Malik
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Upom Malik
Benjamin Johnston Benjamin Johnston
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Benjamin Johnston
Matt Goldwasser Matt Goldwasser
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Matt Goldwasser
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Toc

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, preorders start plunging by 20% after a couple of weeks. What's going on? As the best data analyst at ZoomZoom, you've been assigned to figure this out.

The 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 objective...
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