Register
Courses Courses Feedback Feedback

Recent questions and answers in Data Science Interview Questions

1 1 vote
0 0 answers
651
651 views
Data manipulation problem study resources
A colleague of mine is studying for tech roles, and they're asked to solve a consistent type of problem during the phone screenings: practicing manipulating data (sets, h...
1 1 vote
1 1 answer
2.7k
2.7k views
Do you have a cheatsheet for Data Science?!
1 1 vote
1 1 answer
775
775 views
What is summary statistics?
1 1 vote
1 1 answer
2.0k
2.0k views
What is the purpose of randomization in statistics?
1 1 vote
1 1 answer
14.5k
14.5k views
What is the difference between univariate and multivariate analysis?
1 1 vote
1 1 answer
1.3k
1.3k views
How will you create a classification to identify key customer trends in unstructured data?
1 1 vote
1 1 answer
1.7k
1.7k views
Mention some common problems that data analysts encounter during analysis.
1 1 vote
1 1 answer
1.4k
1.4k views
Explain the typical data analysis process.
1 1 vote
1 1 answer
1.2k
1.2k views
What is the difference between Data Mining and Data Analysis?
1 1 vote
1 1 answer
2.6k
2.6k views
What is TF-IDF algorithm?
1 1 vote
1 1 answer
2.1k
2.1k views
What are Natural Language Processing (NLP) and its applications?
1 1 vote
1 1 answer
1.4k
1.4k views
Which scenarios among the following are a valid reason to use regularization?
A. To drop the least useful variables of a modelB. To reduce over-fittingC. To reduce the bias of a modelD. To decrease p-value
1 1 vote
1 1 answer
954
954 views
How to transform categorical variable into a matrix binary feature?
Which of the following feature transformations would be a good choice to transform a categorical variable into a matrix binary feature?A. One-hot-encodingB. Principal Com...
1 1 vote
1 1 answer
6.7k
6.7k views
When should we use Mean, Median or Mode as Measures of Central Tendency?
1 1 vote
0 0 answers
670
670 views
What are the main steps in making a decision tree?
1 1 vote
0 0 answers
1.1k
1.1k views
Please explain Linear Regression with an example?
Help get things started by asking a question.