DataFlair has published a series of top data science interview questions and answers which contains 130 questions of all the levels. This is the second part of the Data Science Interview Questions and Answers series. In our first part, we discussed some basic level questions which could be asked in your next interview, especially if you are a fresher in Data Science. Today, I am sharing the top 71 Data Science Interview Questions and Answers. This is the only part where you will get best scenario-based interview questions for data scientist interviews. A Data Science Interview is not a test of your knowledge, but your ability to do it at the right time. Every data science interview has many Python-related questions, so if you really want to crack your next data science interview, you need to master Python. Q.1 What is a lambda expression in Python? With the help of lambda expression, you can create an anonymous function. Unlike conventional functions, lambda functions occupy a single line of code. We obtain the output of 25. Q.2 How will you measure the Euclidean distance between the two arrays in numpy?