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SENSORY DISCRIMINATION TESTS

WHAT ARE SENSORY DISCRIMINATION TESTS? When introducing a new product, discrimination testing is very important in sensory analysis. Sensory discrimination tests allow you to check if a product is significantly different from a second product. They include the triangle test, the duo-trio test, 2-AFC, and more! SENSORY DISCRIMINATION TESTS IN XLSTAT XLSTAT includes the most common discrimination test...

Mandel’s h and k statistics for outliers

What are Mandel's h and k statistics? The Mandel’s h and k statistics (1985, 1991) have been developed to help to identify outliers during inter-laboratories studies. The idea of these statistics is to detect differences between samples obtained from different laboratories to see if a sample contains outliers in comparison to others. The h statistic detects difference between means and the k statistic...

XLSTAT-CCR

The XLSTAT-CCR Option (only for Windows OS) XLSTAT-CompReg can obtain reliable regression predictions even when there are more predictors than cases It is a reduced version of Statistical Innovations' CORExpress® package. On many data sets, Correlated Component Regression (CCR) has been shown to outperform penalized regression techniques such as Lasso, and other methods such as Naive Bayes and PLS...

Analysis of a mixture design

What is mixture design analysis Description of models The analysis of a mixture design is based on the same principle as linear regression. The major difference comes from the model that is used. Several models are available. By default, XLSTAT associates a reduced model (Simplified Canonical Model) to centroïd simplexes. However, it is possible to change the model if the number of degrees of freedom...

Coding

Why do we recode data All data cannot be directly used as input data into an analysis. For example, you may need to transform levels into numbers. Also when plotting a chart you may want to change the labels with a code that is shorter or more precise. Doing these tasks manually may be time consuming. This is why we have developed a coding tool that can do the work for you, saving you time and hassle....

Correlated Component Regression with a dichotomous Y & many correlated predictors

Gage Repeatability and Reproducibility for Attributes

What is Gage Gage Repeatability and Reproducibility for Attributes Measurement System Analysis (MSA) or Gage R & R (Gage Repeatability and Reproducibility) is a method to control and judge a measurement process. It is useful to determine which sources are responsible for the variation of the measurement data. Variability can be caused by the measurement system, the operator or the parts. The word...

Setting up an analysis in XLSTAT

Time-Intensity analysis in Excel

Reliability analysis in Excel