Data Science Interview Insights

2025 Tech & Data Role Salary Guide

Comprehensive 2025 salary guide for tech and data roles: data scientist, engineer, analyst, and more. Explore trends, top skills, and career advice.

Business Analyst Salary Guide (2025)

Explore 2025 business analyst salaries, career growth, top skills, and industry trends. Learn how to maximize your earning potential as a business analyst.

Business Intelligence Salary Guide (2025)

Discover 2025 business intelligence salaries, career paths, top skills, and industry trends. Learn how to advance your BI career and maximize your earnings.

Data Analyst Salary Guide (2025)

Data Engineer Salary Guide (2025)

Data Scientist Salary Guide (2025)

Google Data Scientist Interview Questions (2025)

Growth Marketing Analyst Salary Guide (2025)

Highest Paying Data Science Jobs (2025)

Machine Learning Engineer Salary Guide (2025)

Meta (Facebook) Data Science Interview Guide (2025)

Product Analyst Salary Guide (2025)

Research Scientist Salary Guide (2025)

Most Common SQL Interview Questions for Analytics (2025)

Cracking Amazon's Data Science Interview

Want to land a data science job interview with Amazon? How to crack the code! This guide is packed with tips and tricks for succeeding in today's competitive market.

Top 20 Machine Learning Interview Questions You Should Know

A curated list of the top 20 machine learning interview questions from companies like Facebook, Amazon, and Microsoft, covering fundamentals, data analysis, and statistics.

SQL Window Function Example Interview Question - Aggregation

Learn how to use SQL window functions for aggregation to solve interview-style questions, including ranking and total spend calculations.

SQL Window Function Example Interview Question - LEAD/LAG

Learn how to use SQL window functions LEAD() and LAG() to analyze historical data, including consecutive year-over-year raises.

SQL Window Function Example Interview Question - RANK()

Learn how to do SQL joins and use window functions like RANK() to solve interview questions. Provided by InterviewQs, a mailing list for coding and data interview problems.

The Facebook Data Scientist Interview

A comprehensive guide to landing a Data Scientist role at Facebook, covering required skills, the interview process, example questions, and preparation tips.

The Google Data Analyst Interview

A curated guide covering 70 data science and analyst interview questions, tips, and strategies for landing a Google Data Analyst role.

SQL Nested Subquery Example Interview Question

Learn how to use SQL nested subqueries to solve interview-style problems, including cumulative totals and windowing functions.

How to Crack Behavioral Interview Questions Using the STAR Method

Learn how to effectively answer behavioral interview questions using the STAR Method (Situation, Task, Action, Result) and prepare for your data science interviews.

Bayesian Analysis of The Price is Right Showcase

Using Bayesian inference to estimate optimal bids in The Price is Right Showcase round, incorporating historical data and risk adjustments.

11 Websites to Find Free, Interesting Datasets

Discover 11 excellent websites for finding free, interesting datasets to practice data analysis, build projects, and enhance your portfolio.

Simulating Random Portfolios to Illustrate the Efficient Frontier in Python

A hands-on guide to modern portfolio theory: simulate thousands of random portfolios in Python to visualize the efficient frontier and identify the optimal Sharpe ratio allocation.

St. Petersburg Paradox

Explore the St. Petersburg Paradox, a probability and decision theory paradox, and see a Python simulation illustrating expected versus median winnings.

Simulating Future Stock Prices using Monte Carlo Methods in Python

Walk you through a quick simulation of future stock returns for AAPL using Python + Monte Carlo methods.

Calculating Value at Risk (VaR) of a Stock Portfolio Using Python

Learn how to calculate the Value at Risk (VaR) of a stock portfolio using Python and variance-covariance methods to quantify financial risk.

Case Study Example 1: An eCommerce Company Evaluation

A case study exercise for an eCommerce company, analyzing sales, customer satisfaction, and proposing areas for business improvement using Kaggle data.

Introduction to Linear Regression using Python

A step-by-step tutorial showing how to analyze NBA player stats and build single-variable and multivariate linear regression models using Python.

On Average, Forgoing College in Favor of Entering the Workforce + Investing Tuition Costs Nets Higher Returns

A financial comparison of the return on investment (ROI) from attending college versus skipping college, entering the workforce, and investing tuition in the stock market.

45 Data Analyst Interview Questions

A curated list of 45 data analyst interview questions across statistics, programming, SQL, and behavioral/business scenarios to help with interview prep.

Which news publications have the most positive headlines? (simple sentiment analysis with Textblob)

Analyzing hundreds of thousands of news headlines with Textblob to determine which publications are the most positive.

SQL 101 - SELECT, FROM, WHERE Clauses

Learn SQL fundamentals focusing on SELECT, FROM, and WHERE clauses to pull and filter data from database tables.

SQL Joins

Learn how to use SQL joins to combine data from multiple tables, including inner, left, right, and full outer joins.

Why Offices Are Becoming More 'Open'

An analysis of why companies are moving toward open offices, highlighting shrinking office space per employee and the cost savings driving the trend.

Introduction to Machine Learning -- evaluating chemical composition of wine

A step-by-step Python code example demonstrating how to classify wine quality using machine learning.

A curated list of 70 data science interview questions

A curated list of 70 data science and analyst interview questions covering statistics, modeling, programming, SQL, and behavioral topics.

Interconnectedness of Companies Through Shared Board Members

Many executives in public companies sit on multiple boards of directors, creating direct links between companies through shared board memberships.

Correlating Stock Returns Using Python

Learn how to pull stock price data with Python and analyze correlations between different companies' stock returns using a Seaborn heatmap.

Sending email using Python and Gmail

Learn how to send emails using Python through Gmail with this step-by-step tutorial. Provided by InterviewQs, a mailing list for coding and data interview problems.

Reading and Writing to Google Spreadsheets Using Python

Learn how to read from and write to a Google Spreadsheet using Python and the Google Sheets API through a step-by-step tutorial.

Scraping Reddit to Find the Most Popular Domains

Learn how to use the Python Reddit API Wrapper (PRAW) to scrape key information from Reddit and analyze which domains generate the highest scoring posts.

Web Scraping Example Using Python and Beautiful Soup

Step-by-step tutorial on web scraping multiple web pages using Python with Beautiful Soup and requests, including data extraction and conversion to CSV.

The Never-Ending Variety of Breakfast Cereal

An exploration of breakfast cereal trends, including product lifespans, new launches by decade, and strategies manufacturers use to keep cereal sales alive.

US Counties with the Highest Annual Savings Potential

Explore which US counties have the highest annual savings potential, visualized interactively. Provided by InterviewQs, a mailing list for coding and data interview problems.

US Counties with the Highest Annual Savings Potential

Explore which US counties offer the highest potential for savings by comparing median income to minimum cost of living. Includes interactive charts and raw data sources.

Which McDonald's Menu Items Give You the Most Calories per Dollar?

Analyze which McDonald's menu items provide the most calories for your dollar, including insights on protein calories per dollar.