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hypothesis-testing-sql-northwind-traders's Introduction

Module 2 Final Project - Querying Databases with SQL & Hypothesis Testing

Emily J. Cain - December 2018

Project Blog Post

Hypothesis 1

  • H0 - There is no statistically significant difference in the quantity ordered of discounted vs. non-discounted products.
    • H0: ๐œ‡1 = ๐œ‡2
  • H1 - There is a statistically significant difference in the quantity ordered of discounted vs. non-discounted products.
    • HA: ๐œ‡1 โ‰  ๐œ‡2

Hypothesis 2

  • H0 - The top employee does not sell more in dollars than the average employee.
    • H0: ๐œ‡ โ‰ค ๐œ‡0
  • H2 - The top employee sells more in dollars than the average employee.
    • HA: ๐œ‡ > ๐œ‡0

Hypothesis 3

  • H0 - The top product does not sell more in quantity than the other products.
    • H0: ๐œ‡ โ‰ค ๐œ‡0
  • H3 - The top product sells more in quantity than the other products.
    • HA: ๐œ‡ > ๐œ‡0

Hypothesis 4

  • H0 - There is no statistically significant difference in revenue generated from customers in countries where there are employees vs. countries where there are no employees.
    • H0: ๐œ‡1 = ๐œ‡2
  • H4 - There is a statistically significant difference in revenue generated from customers in countries where there are employees vs. countries where there are no employees.
    • HA: ๐œ‡1 โ‰  ๐œ‡2

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