I applied online. The process took 2 weeks. I interviewed at Charlesworth Research (Chicago, IL) in Oct 2015
Interview
First, I have to take a online quantitative test which is very simple, just basic math questions. Then phone interview, go through resume, then probability questions which are easy, takes up to 25 mins. The third round is about behavioral questions personality. Not bad experience. I didn't get the offer.
The interview takes up to 20 mins (scheduled to take 30 mins). The interviewer is late for about 25 mins, and she is not interested in your past expericence, which means that she didn't even look at your resume before the interview. Some typical probability questions afterwards, and I could barely hear the voice from the interviewer. It is a bad experience.
I applied online. The process took 1 week. I interviewed at Charlesworth Research in Sept 2015
Interview
I got a math test which was 15 minutes. After passing the test, I got a 30 minute long phone interview. It was mainly self introduction and a few brain teaser question.
Interview questions [1]
Question 1
How many times in a day do clock hands(hour and minute) make right angle?