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…
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…
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…
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…
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.).…
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…
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…
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…
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…
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…