Data science Interview questions

+1 vote
I'm attending an interview for a data science post and I would like to know a few frequently asked interview questions. Any help would be appreciated, thank you.
Nov 8, 2018 in Career Counselling by Ali
• 11,360 points

recategorized Nov 8, 2018 by Ali 1,238 views

3 answers to this question.

+1 vote

I've attended a few interviews for this very post and the few question that was asked in all of these interviews.

1. What are feature vectors?

A feature vector is an n-dimensional vector of numerical features that represent some object. In machine learning, feature vectors are used to represent numeric or symbolic characteristics, called features, of an object in a mathematical, easily analyzable way.

2. Steps in making decision tree

  • take the entire data set as input
  • analyze the split that maximizes the separation of classes
  • Apply the split to the input data
  • Re-apply steps 1 to 2 to the divided data.
  • Stop when you meet some stopping criteria.
  • This step is called pruning. Clean up the tree if you went too far doing splits.

Hope this helps!

If you wanna know more about the Data Science with Python, go for the training course today.

Thank you!!

answered Nov 8, 2018 by Maverick
• 10,840 points
+1 vote
Learn something along these lines:

What is Data Science? Also, list the differences between supervised and unsupervised learning.

Python

What is Selection Bias?

What do you understand by the term Normal Distribution?
answered Jan 28, 2019 by Darton
+1 vote

The interview question for Data Science is usually unpredictable as they generally ask about the project you work on . Apart from this there are some question which i mention below ,which are asked frequently in the Data Science interview:

1. What is the difference between Data Science and Data Analyst?

2. Which one you prefer between Python and R and why?

3. what do you understand by logistic regression?

4.Do you think Data Science has a bright future?? support your answer?

5.Give an real life application of Data Science

Start Your Journey to Becoming a Data Scientist - Join Our Best Data Science Training Program Now!

answered Mar 4, 2019 by MrBoot
• 1,190 points

Related Questions In Career Counselling

+3 votes
4 answers
+7 votes
20 answers

Let's keep this thread for discussing Java Interview questions & Experience

Hello everyone here is an updated blog ...READ MORE

answered Jan 17, 2019 in Career Counselling by Edureka
• 4,220 points
5,906 views
+11 votes
6 answers
+16 votes
6 answers
+1 vote
3 answers

what are the job roles available related to data science?

Data Science is the technology which is ...READ MORE

answered Mar 5, 2019 in Career Counselling by MrBoot
• 1,190 points
1,463 views
0 votes
2 answers

Resources to learn data science

Data science is a vast topic and ...READ MORE

answered Nov 9, 2018 in Career Counselling by Maverick
• 10,840 points
763 views
0 votes
4 answers

Applications of data science

Data science is a field of Big Data geared toward ...READ MORE

answered Apr 6, 2019 in Career Counselling by navdeep
• 330 points
2,416 views
0 votes
3 answers

How's the demand for data science?

Honestly saying the vacancy for any job ...READ MORE

answered Mar 7, 2019 in Career Counselling by MrBoot
• 1,190 points
2,770 views
+1 vote
5 answers

Difference between data analytics and data science

Data science and data analytics: people working ...READ MORE

answered Jun 4, 2019 in Career Counselling by minati biswal
2,325 views
+10 votes
2 answers

Is data science for me, will I be able to excel in it?

Honestly I believe in skills over talent ...READ MORE

answered Nov 8, 2018 in Career Counselling by Maverick
• 10,840 points
1,266 views
webinar REGISTER FOR FREE WEBINAR X
REGISTER NOW
webinar_success Thank you for registering Join Edureka Meetup community for 100+ Free Webinars each month JOIN MEETUP GROUP