Interview Q&A Archives - Page 3 of 3

Defining Clusters

Question: How will you define the number of clusters in a clustering algorithm? Example “There are a few ways to choose a “k”– one agreed…

Treating Missing Values

Question: During analysis, how do you treat missing values? Example “This depends a lot on why the missing values are missing. If there is a…

Steps to Analytics Project

Question: What are the various steps involved in an analytics project? Example “While each project might go differently, you always start with understanding the business…

Handling Outlier Values

Question: How can you handle outlier values? Example “Outliers can be handled a few ways, depending on how important that data point is. You could…

Collaborative Filtering

Question: What is collaborative filtering? Example “Collaborative filtering is often used in recommender systems to predict the outcome using others’ ratings, not just the user…

Recommender System

Question: What are recommender systems? Example “A recommender system is an information filtering system that predicts preferences or ratings for what a user would give.…

Linear Regression

Question: What is linear regression? Example “Linear regression is when you are using input variable or variables to predict a change in Y. This differs…