Posts tagged with ‘Statistics’

  • Statistical 101: Gender Salary Gap

    By Mladen Jovanovic on 24/01/2019

    With this short article I wanted to showcase how easy is to jump to conclusions with simplistic statistical analysis using fake salary data. It is important to recognize that statistical analysis involve a lot of subjective decisions and cannot be claimed to be purely objective, but it is still way better than ignorance or ideology.

  • Predicting non-contact hamstring injuries by using training load data and machine learning models

    By Mladen Jovanovic on 17/12/2018

    Research has shown that there is an association between training load and likelihood of suffering non-contact injuries. But can we predict the injury? In this paper I have tried to predict non-contact hamstring injury by using two seasons day-to-day training load data.

  • Fat Tails and Inequality

    By Mladen Jovanovic on 04/12/2018

    The following R workbook is meant to show different effects (or should I call them inequalities or differences) between groups when different thresholds for selection are applied. Hopefully, this will be a good example on how it is important to be statistically educated when comparing groups and discussing inequality.

  • Smallest Worthwhile Change: Individual vs Group

    By Mladen Jovanovic on 10/11/2018

    Smallest Worthwhile Change: Individual vs Group If you haven’t been living under a rock over past few years, you must be familiar with Will Hopkins work on magnitude-based inferences (MBI). One of the basis behind MBI is defining smallest practically meaningful change, or smallest worthwhile change (SWC). Together with Typical Error (TE) of a test, SWC is very needed...

  • Simple Sensitivity Analysis with R

    By Mladen Jovanovic on 13/09/2018

    A sensitivity analysis is a technique used to determine how different values of an independent variable impact a particular dependent variable under a given set of assumptions. This technique is used within specific boundaries that depend on one or more input variables, such as the effect that changes in interest rates have on bond prices.

  • Data Preparation for Injury Prediction

    By Mladen Jovanovic on 23/08/2018

    I have recently wrote a technical note (actually a video) for Sport Performance and Science Reports journal regarding Data Preparation for Injury Prediction. Both data and R core are available on GitHub repository.

  • Profiling Issues – Mind Your Target Variable

    By Mladen Jovanovic on 30/05/2018

    This is VERY IMPORTANT concept and if you are doing any type of profiling, I urge you to watch this video.

  • Bootstrap Magnitude Based Predictions (BMBP)

    By Mladen Jovanovic on 20/05/2018

    There has been a lot of fuss regarding Magnitude Based Inference (MBI) lately, peaking with the recent article and video by Kristin Sainani. The originators of MBI, Will Hopkins and Alan Batterham, recently posted their commentary of the critiques at sportsci.org. With the video below I wanted to give my opinion, but also provide rationale for “novel” techniques, that...

  • Variable Clustering and Archetypal Analysis

    By Mladen Jovanovic on 08/05/2018

    I believe that the following video and the accompanying R code and data set will be very useful to sport scientists out there and will teach them extremely pragmatic technique in data mining.

  • Fantastic Sport Analytics Papers & Resources

    By Mladen Jovanovic on 03/03/2018

    I have recently stumbled on a few great papers that outline very useful statistical techniques, that are VERY applicable to sport and training analytics. If you are interested in analytics, this is a gold mine.