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Author: Dr. Mario Schneider

This author has written 10 articles
Read more about the article How to use Excel’s LAMBDA Function for Data Analysis?

How to use Excel’s LAMBDA Function for Data Analysis?

  • Post published:29. June 2022
  • Post author:Dr. Mario Schneider

Recently, Microsoft introduced the so-called LAMBDA function allowing users to define custom Excel functions. The concept of user-defined functions in Excel is not new. However, in the past these had…

Continue ReadingHow to use Excel’s LAMBDA Function for Data Analysis?
Read more about the article Logistic regression in vaccine testing

Logistic regression in vaccine testing

  • Post published:14. April 2021
  • Post author:Dr. Mario Schneider

I guess almost every scientist is familiar with linear regression and has already spent quite some time using it for various assays like BCA or Bradford assay for protein concentration…

Continue ReadingLogistic regression in vaccine testing
Read more about the article Data Analysis Book — fresh from the press

Data Analysis Book — fresh from the press

  • Post published:28. November 2020
  • Post author:Dr. Mario Schneider

After 3.5 years of continous work, 3.5 years of lack of sleep and 3.5 years apologizing to my kids and my wife for spending too less time with them, my…

Continue ReadingData Analysis Book — fresh from the press
Read more about the article Most European countries did not show exceptional excess mortalities during SARS-CoV-2 pandemic

Most European countries did not show exceptional excess mortalities during SARS-CoV-2 pandemic

  • Post published:24. November 2020
  • Post author:Dr. Mario Schneider

Currently many political discussions and decisions are dominated by new increasing SARS-CoV-2 cases. However, as these numbers are dependent on the precision of the corresponding tests it is wise to…

Continue ReadingMost European countries did not show exceptional excess mortalities during SARS-CoV-2 pandemic
Read more about the article Confidence and Prediction bands in Regression analysis

Confidence and Prediction bands in Regression analysis

  • Post published:17. August 2020
  • Post author:Dr. Mario Schneider

What are confidence and prediction bands? [latexpage]The moment a scientist starts working experimentally, the outcomes are prone to random error that mostly cannot be avoided (e.g. imperfections of instruments etc.).…

Continue ReadingConfidence and Prediction bands in Regression analysis
Read more about the article Spearman-Kärber analysis and the Creutzfeld-Jakob disease

Spearman-Kärber analysis and the Creutzfeld-Jakob disease

  • Post published:5. May 2020
  • Post author:Dr. Mario Schneider

A non-parametric analysis to determine the ED50, SD50 or similar metrics The first time I came across the term Spearman-Kärber was with the analysis of RT-QuIC. These assays are typically…

Continue ReadingSpearman-Kärber analysis and the Creutzfeld-Jakob disease
Read more about the article Error bars — frequently used but rarely questioned

Error bars — frequently used but rarely questioned

  • Post published:29. March 2020
  • Post author:Dr. Mario Schneider

I have seen many publications with beautiful colored graphs including well-formatted error bars. Unfortunately, a lot of these publications do not state what these error bars represent. If not stated…

Continue ReadingError bars — frequently used but rarely questioned
Read more about the article Don’t get fooled again by the R-squared

Don’t get fooled again by the R-squared

  • Post published:2. March 2020
  • Post author:Dr. Mario Schneider

Do you agree with the following statement? An R² of 0.995 is very good.An R² value of -0.145 is impossible, since a squared value cannot be negative.A fit model resulting…

Continue ReadingDon’t get fooled again by the R-squared
Read more about the article Outliers — Friends or Foes?

Outliers — Friends or Foes?

  • Post published:17. February 2020
  • Post author:Dr. Mario Schneider

If you are an experimental working person, I guess you have already faced situations with outliers, i.e. any data points appearing out of range compared to the others. Probably you…

Continue ReadingOutliers — Friends or Foes?
Read more about the article Data Analysis — why should you care about it?

Data Analysis — why should you care about it?

  • Post published:24. January 2020
  • Post author:Dr. Mario Schneider

First of all, what does data analysis actually mean? As often, there is no black and white definition of this term but from my point-of-view John W. Tukey, a famous…

Continue ReadingData Analysis — why should you care about it?

News

German data analysis video tutorials now on YouTube
We are happy to announce that we have recently published our YouTube channel ‘data analysis for scientists’ together with Mario’s former chemometrics professor Dr. Ernst Cleve.

To the YouTube channel website

Book on data analysis was recently published. Mario has recently published his book on data analysis for scientists and engineers. For more details see our recent blog post.

To the book presentation

Recent Posts

  • How to use Excel’s LAMBDA Function for Data Analysis?
  • Logistic regression in vaccine testing
  • Data Analysis Book — fresh from the press
  • Most European countries did not show exceptional excess mortalities during SARS-CoV-2 pandemic
  • Confidence and Prediction bands in Regression analysis

Data analysis for scientists,
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