### 30 Questions to test your understanding of Logistic Regression

Introduction Logistic Regression is likely the most commonly used algorithm for solving all classification problems. It is also one of the first methods people …

### 30 Questions to test a data scientist on Linear Regression [Solution: Skilltest – Linear Regression]

Introduction Linear Regression is still the most prominently used statistical technique in data science industry and in academia to explain relationships between features. A …

### 42 Questions on SQL for all aspiring Data Scientists

Introduction SQL is a universal tool in data science. Irrespective of which language you use as your main tool – you need to know …

### 40 Questions to test a data scientist on Machine Learning [Solution: SkillPower – Machine Learning, DataFest 2017]

Introduction Machine Learning is one of the most sought after skills these days. If you are a data scientist, then you need to be …

### 40 Must know Questions to test a data scientist on Dimensionality Reduction techniques

Introduction Have you come across a dataset with hundreds of columns and wondered how to build a predictive model on it? Or have come …

### How to read most commonly used file formats in Data Science (using Python)?

Introduction If you have been part of data industry, you would know the challenge of working with different data types. Different formats, different compression, …

### 40 Questions to ask a Data Scientist on Ensemble Modeling Techniques (Skilltest Solution)

Introduction Ensemble modeling is a powerful way to improve the performance of your machine learning models. If you wish to be on the top …

### 21 Steps to Get Started with Apache Spark using Scala

Introduction If you ask any industry expert, what language should you learn for big data, they would definitely suggest you to start with Scala. …

### 46 Questions on SQL to test a data science professional (Skilltest Solution)

Introduction If there is one language, every data science professional should know – it is SQL. SQL stands for Structured Query Language. It is …

### 45 questions to test a Data Scientist on Regression (Skill test – Regression Solution)

Introduction Regression is much more than just linear and logistic regression. It includes many techniques for modeling and analyzing several variables. This skill test …