The Fundamental Thing to Know from Statistics for Design Engineering

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A quiz:

What statistical concept is used in these design activities?

  • DOE (design of experiments)
  • Sampling 
  • Test results analysis 
  • Gage R&R studies 
  • Test method validations 
  • SPC (with some rules in monitoring changes in a process)


If you answered, "Hypothesis Testing", you're right on!

Even if you’re not really into statistics, there’s still basics that we should learn and understand, especially in design engineering.

One of those basics is hypothesis testing. So much of our decisions about whether a design is good or not good (or good enough) is based on this concept. It will fundamentally change how you look at design activities – so much so, it’s a responsibility to understand it.

Even if we’re working with others who are doing the calculations, we still need to understand the calculations and the assumptions made from it for ourselves. Sometimes we need a reminder or a refresher

This short video is an introduction to hypothesis testing. This is the first video in a series about hypothesis testing and is a good introduction to the concept of it. 

This longer video covers many concepts in statistics. If nothing else, watch the last chapter about p-hacking/data dredging/data snooping.


Other Quality during Design podcast episodes you might like:

Variable Relationships: Correlation and Causation

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