@MikeCarnell would this mean that the measurement system resolution needs to be improved by a factor of 10?
@yaseminin I am struggling to understand the example – how many different parts are used, how many times is each measurement repeated? Could you please share the Gage R&R graph if available?
Xavier replied to the topic DOE – How to Design Experiments with Many Factors and Levels in the forum Methodology 8 months, 3 weeks ago
You say you can run 60 experiments which is good, that gives enough data points to be confident.
The problem is that you have too many levels to get a manageable number of runs.
5 levels could be an overkill if the effect of a factor isn’t linear or quadratic.
Some options which include reducing the number of levels are:
1) 2 level Full…[Read more]
Xavier replied to the topic Is It Possible to Have Contradicting Pearson Coefficients and P-values? in the forum Methodology 8 months, 3 weeks ago
Thank you very much for the data set, what you said makes sense.
From what I see it is not possible to get contradicting Pearson coefficients and P-Values.
If the Pearson number is high, the P-Value will be low (-> there is a limear correlation)
If the Pearson number is low, the P-Value will be high (-> there is no linear correlation).
Xavier started the topic Is It Possible to Have Contradicting Pearson Coefficients and P-values? in the forum Methodology 8 months, 3 weeks ago
For regression, with a simple input X and output Y, Pearson’s coefficient tells us there is a strong linear correlation between an input and an output if close to -1 or +1.
In such cases the p-Value is low (which makes sense).
What happens when there is a non-linear correlation between X and Y, what can I use to characterize / prove…[Read more]
@Truong, if we think about an output Y:
-The Upper Specification Limit (USL) is the highest level of Y the customer will accept, based only on customer requirements (here, your customer seems indeed to be the next process step). It is not obtained through calculation.
-The Upper Control Limit (UCL) is the highest level of Y at which we consider…[Read more]
Picture this – it’s late in the evening, I’m doing some work on a production line churning out finished goods, I want to check the weight of the product (let’s say target weight is 18 grams).
There is only 1 operator and myself (2 people in total to perform measurements) on the line and I want to do a gage R&R on the scales with the product that…[Read more]
I am looking to validate a method for density measurement.
This is a destructive test and I am looking at a nested gage R&R.
All the setups I’ve seen for nested gage R&R rely on sampling from batches and assuming that all samples within a batch are identical. In these cases, an operator will measure a minimum of 2 samples from the same…[Read more]