I applied through a recruiter. I interviewed at Google
Interview
Got a reply from recruiter with the questionnaire after 2 days of applying online. After questionnaire, schedule a phone interview.
Interview questions [1]
Question 1
1.When to use mean and medium?
2. For sample size n, the margin of error is 3. How many more samples do we need to make the margin of error to 0.3?
3. X is draw from the normal distribution of mu with standard deviation of 1. Decides whether mu is not zero. So I do the hypothesis testing. How reliable the test is?
4. Coding Question -> write a function to generate N sample from normal distribution and plot the histogram.
In the technical round, I faced a challenging A/B testing question regarding YouTube thumbnails that pushed my analytical skills. I was also asked to discuss metrics for evaluating user engagement, which had me thinking on my feet. The behavioral section was tough, but I found the principles I studied on PracHub to be incredibly relevant. The overall experience was intense and demanding, yet I received an offer in the end. Ultimately, I decided to decline, as I felt it wasn't the right fit for my career goals.
Interview questions [1]
Question 1
Design an A/B test to evaluate the impact of a new YouTube homepage thumbnail design on user watch time. How would you choose the success metric, sample size, and handle novelty effects?
It was all good, the interviewer was very nice. Technical questions were a bit challenging but overall it was good. The hiring manager was looking for some hands on experience
I applied online. I interviewed at Google (Mountain View, CA) in Apr 2026
Interview
Got email from the HR and scheduled 2 virtual onsite interviews. It went well. I went through another 3 rounds of VO. My packet was submitted to the committee. They do not like it and gave me another round of VO. In the 6th round VO, my application got rejected. It was a total waste of time for everyone.