528 interview questions for Data Scientist (2025)

37 votes2621 runs0 comment

31 votes1556 runs1 comment

19 votes1927 runs0 comment

Théoat Mar 28, 2022

17 votes2579 runs0 comment

16 votes1159 runs0 comment

machine learning

missing data

Martinat Apr 4, 2022

15 votes2596 runs0 comment

15 votes2517 runs1 comment

15 votes759 runs0 comment

Martinat Mar 14, 2022

14 votes2564 runs0 comment

14 votes736 runs0 comment

machine learning

deep learning

Martinat Sep 19, 2022

10 votes2526 runs4 comments

10 votes2455 runs0 comment

10 votes1751 runs0 comment

Théoat Mar 28, 2022

10 votes867 runs0 comment

scikit-learn

logistic regression

9 votes1966 runs0 comment

Théoat Jan 23, 2023

9 votes1170 runs1 comment

9 votes1128 runs0 comment

hyperparameters

Martinat Mar 15, 2022

9 votes1049 runs0 comment

machine learning

missing data

Martinat Apr 4, 2022

8 votes2546 runs0 comment

8 votes1743 runs0 comment

Théoat Mar 28, 2022

528 interview questionsfor Data Scientist (2025)

Test your technical skills before an interview of Data Scientist with 528 corrected questions. Beginner, Intermediate or Expert level.

528 interview questionsfor Data Scientist (2025)

Test your technical skills before an interview of Data Scientist with 528 corrected questions. Beginner, Intermediate or Expert level.

Write a SQL query to retrieve the list of employees with a salary greater than 5100.

Write a Python function that returns the factorial of a number.

Write a Python function that prints the elements of a list.

Select only distinct values in a column using SQL

How to handle missing data in a given training data set ?

Write a SQL query to insert data into a table

Update a column in an SQL table

What is the missing word in the following sentence: Overfitting is the production of a model that corresponds too closely to the training data set and may therefore fail to fit other data sets and so fail to perform any reliable forecast.

Which SQL keyword is used to sort the result of a SELECT statement?

What is the relation between Artificial intelligence (AI), machine learning and deep learning?

Write the SQL query to delete a column from a table

Write a SQL query to retrieve the products with a price less than 1000 and sort the results in descending order of price.

Use the zip() function to iterate over two lists in parallel.

What is the value of the decision threshold used with logistic regression in Scikit-learn?

Start a HTTP server from the CLI with python

Write a SQL query to retrieve the titles of books written by 'John Smith'.

The validation set is used to provide frequent and unbiased evaluations of the model’s fit on the training set while tuning its hyperparameters/parameters: in other words,the model is found and then tested on the validation set before to be improved once again.

How to handle missing data in a given training data set ?

How to delete an SQL table?

What type is `function_a` in the following code ?