Andy PengStatistics Interview QuestionsThere are many different types of statistics interview questions that one may see during an interview. Below is an example of a statistics…2 min read·Mar 13, 2021----
Andy PengCommon Table Expression (CTE)While working on a practice interview question, we came upon a problem that requires CTE. But what is CTE? CTE, also known as Common Table…2 min read·Feb 17, 2021----
Andy PengA/B Testing, What is it?What is A/B testing? A/B testing is the process of comparing two or more variants to see which one performs the best. Examples where A/B…2 min read·Feb 2, 2021----
Andy PengSQL — RANK FunctionWhat is a RANK function? While practicing technical interview questions from Data Interview Q’s, I came upon SQL questions involving rank…3 min read·Jan 25, 2021----
Andy PengSQL Interview Question AttemptWhat are some technical interview questions that applicants will see in an interview? Below is an example of a SQL technical interview…3 min read·Dec 28, 2020----
Andy PengBeijing Air QualityHow is the air quality in Beijing? We hear stories about the air quality, but is the air quality in Beijing really that bad? Through my…5 min read·Nov 2, 2020----
Andy PengPreprocessing Images with Data SplitHow to perform a train test split on images? While working on Flatiron School Module 4 Project — Image Classification, I came upon this…4 min read·Sep 8, 2020----
Andy PengPredicting Heart Disease?Can you predict if a patient has heart disease? Let’s give it a try. I will be using the data set from Kaggle for the extent of my Mod 3…7 min read·Jul 12, 2020----
Andy PenginAnalytics VidhyaData Visualizations for Zip CodesHow do you make visualizations for features that involve location or zip codes? What happen if you want to display average house prices of…5 min read·May 10, 2020----
Andy PengFirst Attempt at Cleaning Categorical DataHow do you deal with categorical data? What should you do to be able to examine categorical data? While working on the Movie Project for…6 min read·Mar 16, 2020----