August 5, 2021 SQL Interview Question: Creating Column of Arrays This problem statement is a part of our SQL Interview Questions series. In this series we are committed to bring out a collection of…
August 1, 2021 SQL Joins Interview Question: Self Join This problem statement is a part of our SQL Interview Questions series. In this series we are committed to bring out a collection of…
July 25, 2021 SQL Window Function Interview Question: Employee Rating Difference This is our second problem statement in the SQL Interview Questions series. In this series we are committed to bring out a collection of…
July 21, 2021 SQL Window Function Interview Question: Ranking Problem SQL is the most important skill for a data science/analytics professional and during the interviews, SQL window function problems are always the interviewer’s favorite….
September 26, 2020 Central Limit Theorem Introduction What is Central Limit Theorem? Aspiring data scientists often flounder at this question during interviews. Data science aspirants often find it challenging to…
September 6, 2020 Standard Normal Distributions & Z-Scores Introduction to Normal Distribution Normal distribution, also known as the Gaussian distribution, is a continuous probability distribution that is symmetric about its mean. The…
September 5, 2020 Simplest Explanation of Normal Distribution Introduction The concept of Normal distribution forms the core of statistics and data science. It is the most commonly used probability distribution in statistics,…
August 9, 2020 Partition Values Introduction The Partition Values are the measures used in statistics for dividing the total number of observations of a distribution into certain number of…
August 1, 2020 Measures of Dispersion Introduction Descriptive statistics provide measures to summarize and compare data sets as single numerical values. The two measures that are most widely used to…
July 28, 2020 Measures of Central Tendency Introduction In statistics, the three most frequently used measures of central tendency are the Mean, Median and Mode. Measures of central tendency represents a…