Hi there!

My name is Ruslan Klymentiev. Welcome to my blog.

This is the place where I post stuff related to:

• Machine Learning
• Probability & Statistics
• Data Visualization
• (and a bit of) Neuroscience

# Recent Posts

### A (not that) Simple Least Squares Regression

Overview of the math behind an Ordinary Least Squares method, and what is needed to be taken into consideration when fitting a regression line.

### Role of Antidepressants in the Treatment of Major Depressive Disorder

Literature review for the final project at 2020 International Youth Neuroscience Association Summer Course.

### Null Hypothesis Significance Testing, part 3

Overview of the power and the effect size of the test and why low p-value is not always enough to make a decision.

### Null Hypothesis Significance Testing, part 2

Introduction to the inference for a population proportion using binomial test and $\chi^2$ test for independence.

### Null Hypothesis Significance Testing, part 1

Basic concept of the NHST and the idea of p-value. Overview of the inference for a population mean using one/two-sample $t$-tests and ANOVA.

# Webinars

Recent & Upcoming

### How to start career in Data (in Russian)

In this episode of DEVrepublik podcast I talked about my story how I got into Data Science field (spoiler, electronic engineering-fitness-marketing-data) and discussed what main skills are needed for a fresh data enthusiast.

### Statistical Hypothesis Testing (in Russian)

Main idea of the Null Hypothesis Significance Testing. Intuition behind the p-value. How to perform t-tests, ANOVA, Binomial Test and Chi-squared Test.

### Packages for Data Visualization (in Russian)

The main types of charts. How to build graphs in Python using matplotlib, seaborn and plotly packages.