Author Archive | Michael Parker

EWMA Chart with Minitab

By Michael Parker on March 16, 2016 in “How to” with Minitab, Six Sigma

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CumSum Chart with Minitab

By Michael Parker on March 11, 2016 in “How to” with Minitab, Six Sigma

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NP Chart with Minitab

By Michael Parker on March 11, 2016 in “How to” with Minitab, Six Sigma

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Xbar S Chart with Minitab

By Michael Parker on March 10, 2016 in “How to” with Minitab, Six Sigma

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Two Sample Proportion Test with Minitab

By Michael Parker on March 9, 2016 in “How to” with Minitab, Six Sigma

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P Chart with Minitab

By Michael Parker on February 24, 2016 in “How to” with Minitab, Six Sigma

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U Chart with Minitab

By Michael Parker on February 12, 2016 in “How to” with Minitab, Six Sigma

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Xbar R Chart with Minitab

By Michael Parker on February 11, 2016 in “How to” with Minitab, Six Sigma

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IR Chart with Minitab

By Michael Parker on February 10, 2016 in “How to” with Minitab, Six Sigma

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Stepwise Regression in Minitab

By Michael Parker on February 3, 2016 in “How to” with Minitab, Six Sigma

What is Stepwise Regression? Stepwise regression is a statistical method to automatically select regression models with the best sets of predictive variables from a large set of potential variables. There are different statistical methods used in stepwise regression to evaluate the potential variables in the model: Three Approaches to Stepwise Regression How to Use Minitab […]

Full Factorial with Minitab

By Michael Parker on February 3, 2016 in “How to” with Minitab, Six Sigma

What is a Full Factorial DOE? In a full factorial experiment, all of the possible combinations of factors and levels are created and tested. For example, for two-level design (i.e.each factor has two levels) with k factors, there are 2k possible scenarios or treatments. Two factors, each with two levels, we have 22 = 4 treatments […]

Logistic Regression with Minitab

By Michael Parker on February 3, 2016 in “How to” with Minitab, Six Sigma

What is Logistic Regression? Logistic regression is a statistical method to predict the probability of an event occurring by fitting the data to a logistic curve using logistic function. The regression analysis used for predicting the outcome of a categorical dependent variable, based on one or more predictor variables. The logistic function used to model […]

Run Chart with Minitab

By Michael Parker on January 28, 2016 in “How to” with Minitab, Six Sigma

Why we use a Run Chart A run chart is a chart used to present data in time order. These charts capture process performance over time. The X axis indicates time and the Y axis shows the observed values. A run chart is similar to a scatter plot in that it shows the relationship between X and […]