Content by Harish Jose
Mon, 10/16/2023 - 12:03
Today I’m looking at some practical suggestions for reducing sample sizes for attribute testing. A sample is chosen to represent a population. The sample size should be sufficient to represent the population parameters such as mean and standard…
Mon, 08/28/2023 - 12:03
The success run theorem is one of the most common statistical rationales for sample sizes used for attribute data.
It goes in the form of:
Having zero failures out of 22 samples, we can be 90% confident that the process is at least 90% reliable (or…
Wed, 05/24/2023 - 12:03
I’m looking at a topic in statistics. I’ve had a lot of feedback on one of my earlier posts on OC curves and how one can use them to generate a reliability/confidence statement based on sample size (n), and rejects (c). I provided an Excel…
Wed, 04/26/2023 - 12:03
I’m looking at ideas of the famous Algerian-French philosopher, Jacques Derrida, often described as a post-structuralist. His most famous idea is deconstruction, often associated with analyzing literary works. A text is presented as a coherent whole…
Mon, 09/12/2022 - 12:03
In today’s column, I’m looking at the Ohno Circle in light of German philosopher Martin Heidegger’s ideas. I’ll try to stay away from the neologisms used by Heidegger and will only scratch the surface of his deep insights.
One of the best…
Wed, 05/04/2022 - 12:03
T he dictum, “purpose of a system is what it does” (POSWID) is famous in cybernetics, attributed to the management cybernetician Stafford Beer.
Beer notes: “A good observer will impute the purpose of the system from its actions and thus from the…
Mon, 07/19/2021 - 12:03
Recently, I came across an interesting insight at Toyota’s website. I was taken aback by the first sentence of this paragraph: “Eventually, the value added by the line’s human operators disappears.”
The complete paragraph is shown below: “…
Thu, 04/22/2021 - 12:03
Today I’m looking at the ideas inspired by mirror neurons. Mirror neurons are a class of neurons that activate when someone engages in an activity, or when they observe the same activity being performed by someone else.
The phenomenon was first…
Mon, 10/19/2020 - 12:03
Today I’m looking at the “house” of the Toyota Production System (TPS). The illustration below shows the two pillars of the TPS house, jidoka and just in time (JIT).
I’ve been thinking about why jidoka and JIT are the two pillars, and why they’re…
Thu, 07/02/2020 - 12:03
Shigeo Shingo is one of my heroes in industrial engineering. He had a great mind that thrived on curiosity. Today I am looking at Shingo’s Whys. This is in contrast to Taiichi Ohno’s 5 Whys method.
Ohno’s 5 Whys method is one of the tools in Toyota…
