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Category: Quality Management

October 20, 2020

Sample Size, Control Distance, and Type I and Type II Errors in Control Charts

Type I and Type II errors in control charts (or in statistics) are difficult to explain concepts. When trying to explain the impact of…

August 13, 2020

What could go wrong with a product design?

This is what happens when you do not respect the voice of your customers. This illustration can also be used in the project management…

July 10, 2020

Tuna Quality Inspection Using AI

June 30, 2020

Research Article Collection for Quality Management Class

Shah, R., Ball, G. P., & Netessine, S. (2017). Plant operations and product recalls in the automotive industry: An empirical investigation. Management Science, 63(8), 2439-2459. (https://doi.org/10.1287/mnsc.2016.2456)…

June 30, 2020

Variation Reduces Capacity Utilization

There is a well-known story about how to “properly” fill a jar with sand, rocks, and water. For the detailed story, please refer to…

June 29, 2020

Quality Control in Factory Level: OnePlus Factory Tour by Linus Tech Tips

In this video, a tech Youtuber, Linus, is showing us around the OnePlus factory. You do not have much factory experience or have never…

June 29, 2020

Service Quality: Moving Company in Japan

Evaluating the quality of manufactured products can be straightforward because they are tangible. But the evaluation of services, which are intangible, can be more…

June 29, 2020

Good Management and Performance Excellence is Hard to Copy

To read the full article, please visit: https://hbr.org/2017/09/why-do-we-undervalue-competent-management References: Sadun, R., Bloom, N., & Van Reenen, J. (2017). Why do we undervalue competent management. Harvard…

March 8, 2020

From Population Distribution to Sampling Distribution (Simulation)

Sampling distribution is an important concept in statistics. We rely on sampling distributions (e.g., sample mean and sample proportion) to make decisions about whether…

February 8, 2020

Sampling Distribution and Testing Hypothesis

I developed this lecture note spring 2020 using R markdown for the first time. It supports the compilation of R, Markdown, and LaTex code…

Recent Posts

  • Sample Size, Control Distance, and Type I and Type II Errors in Control Charts October 20, 2020
  • Normal Distribution Visualized (Interactive) October 6, 2020
  • “The Area Under the Curve Concept” using Uniform Distribution October 6, 2020
  • Business Statistics Lecture Slide September 8, 2020
  • What could go wrong with a product design? August 13, 2020
  • Essence of Linear Algebra July 21, 2020
  • Data, Histogram, Distribution, and Probability July 21, 2020
  • Tuna Quality Inspection Using AI July 10, 2020
  • From Factory to Market: Distribution Problem (Linear Programming Approach) July 8, 2020
  • Service Level, Fill Rate, and Newsvendor Model July 8, 2020
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