C3 AI Data Scientist Interview Questions
& Process
Real candidates share what happened, how many rounds they had,
and how the experience turned out.
Based on 152 interview experiences · FREE TO READ
Candidate interview experiences
First-hand accounts from people who interviewed at C3 AI.
C3 AI
Data Scientist
Senior Average Negative experience No offer 2 rounds
Interview process
Take home Recruiter call
Interview formats
Technical Coding
I applied on November 4th and received an online assessment on November 6th. After passing the assessment, a recruiter reached out to schedule interviews. I emailed the recruiter with a question but didn't get a response. Instead, I later received an email stating that hiring needs had changed and they would no longer be moving forward with my application. It was quite strange.
Confirmed questions1 question
- There were a total of 9 questions in the assessment, including machine learning multiple-choice questions and one LeetCode medium problem.
C3 AI
Data Scientist
Entry Average Positive experience No offer 1 round
Interview process
Technical screen
Interview formats
Technical Coding
So, there's this online test with nine questions total. Eight of them are multiple choice, testing stuff like theory, how you solve problems, and tech concepts. The other one is a coding question where you gotta write and run code. The multiple-choice ones could be about algorithms, data structures, SQL, stats, or ML, depending on what they're looking for. The coding part is usually to see if you can code stuff well, make it run fast, and deal with tricky situations.
Confirmed questions1 question
- Some questions about statistics and machine learning fundamentals.
C3 AI
Data Scientist
Mid Easy Positive experience No offer 2 rounds
Interview process
Take home Technical screen Phone screen
Interview formats
Technical Behavioral
I applied on 11/06/2024 and got an email on 11/15/2024 to do a technical assessment on HackerRank. I took the test on 11/19/2024 and a few hours later, got an email to schedule an interview. I scheduled it for 11/21/2024 with the Lead Data Scientist. They asked me questions about a project I did as a Research Assistant. I felt I answered everything well, but unfortunately, I didn't get the offer.
Confirmed questions4 questions
- Can you discuss a project you were involved in?
- Additional questions regarding the project.
- Questions about your ability to work with others.
C3 AI Data Scientist Interview Questions
Quoted word for word from C3 AI interview reports.
“For the order sequence 'AABCBAABD', what is the longest continuous subsequence where every item appears at least k times? If there are ties for length, return them sorted alphabetically. If none exist, return [].”
Read reports →“Consider a Random Forest where each tree uses n_sub features out of n total features. If only one feature is truly significant, how many of the partitions will not involve this feature?”
Read reports →“Can you write a Python function to determine if a string reads the same forwards and backwards, ignoring case, punctuation, and spaces?”
Read reports →“If 20% of people get a flu vaccine (1% flu risk) and 80% don't (5% flu risk), what's the probability someone with the flu took the vaccine?”
Read reports →“What is the impact on the SVM optimization if the weight of the slack variable term in the loss function is increased?”
Read report →“What is the most probable sum when rolling a die repeatedly until the cumulative sum reaches or exceeds 61?”
Read report →“X is building an ID3 decision tree and uses a die's outcomes {1..6} instead of a coin's {0,1}. What's the value of 'b' in X's entropy calculation? Choices: a. 2, b. 3, c. 6, d. 10, e. e”
Read report →“Maria has 100 marbles, 50 blue and 50 green. Regarding the color parameter, is it true that (a) Entropy Impurity = Gini Impurity = 0, (b) Entropy Impurity = Gini Impurity = 1, (c) Entropy Impurity < Gini Impurity, or (d) Entropy Impurity > Gini Impurity?”
Read report →“When creating a model to detect nuclear missile launches from radar images, which performance metric is most critical to examine? Options: a. Recall, b. Specificity, c. F1 score, d. Accuracy”
Read report →Formats, difficulty and experience
Across all 152 C3 AI interview reports.