Tag Archives: statistics

Eurachem 2019 in Tartu was a success

Last week from 20th to 21th of May Tartu hosted Eurachem yearly workshop with the topic of “Validation of targeted and non-targeted methods of analysis”. These two days were filled with exciting presentations, insightful discussions and joy of meeting new and old friends and collaboration partners. What is happening in the field of non-targeted analysis? Eurachem […]

p-value that we call statistically significant

In this post I am going to talk about p-value. You can either watch the illustrative video or read my thoughts below. Enjoy!  This week p-value made it to the Science news feed. The whole story started already in the middle of last year, when Bejamine and coworkers published in Nature Human Behaviuor a […]

For practitioners: do you need weighted linear regression?

In my statistics course, similarly to I guess all other teachers concerned in calibration, I teach that for instrumental analyses weighted linear regression should be used. Why? Non-weighted linear regression (the one we can use with LINEST, SLOPE and INTERCEPT in excel) assumes same signal precision (repeatability standard deviation in other words) for all concentrations […]