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Data Interview Questions
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3 questions, two sql+ 1 python (though can be also easily solved with sql). The sql question is about finding the most popular track and for each track, the day it had most popularity. the python question is about adding certain advs. seconds on every 3,5,15 stream a user had. The interviewer appears having limited experience with sql, as both interviewers had moments first doubting my code, then admit they made mistake. As one example, when doing an inner joining of two tables I had 'From tableA a, tableB b where a.metric=b.metric, the interviewer first asked me where's my inner joining of the two tables, as in her mind it should be written as 'From TableA a inner join TableB b on a.metric=b.metric'. After I explained, she realized both ways writing are equivalent. Though I got all three questions right and well explained, I did not pass the tech interview and there was no feedback.
Was asked numerous questions: Alright first set of questions. What does a company owe its employees? What other companies are you interviewing with? -I believe a company owes its employees Gratitude and Appreciation. I am currently not interviewing with any other Companies at this time. Are you currently employed? How many hours do you intend to dedicate to this job position if hired? -I am not currently employed and intend to dedicate my full 8 hour day to this position if hired. What qualities do you look for in a boss and What motivates you to do your best on the job? Do you have any QuickBooks experience & why do you want to work for this company? What is your clerical speed(WPM)? -I look for strong leadership qualities, considerate, helpful/mentor type. I believe that hard work and dedication everyday motivates me to do my best. I have very little QuickBooks experience it has been a few years since I have used the program. I believe I would be a great fit for this company, I have 9 years of data entry experience and working with spreadsheets, data, financial figures/budgets. My clerical speed is 72WPM
Given a cube and a random walker on the cube, find the expected value of the # of steps that the random walker takes to reach the opposite vertex of the cube.
What is your typing speed?
If a jar has X red balls and Y blue balls, what is the minimum number of draws that is necessary to ensure that you have one ball of each color?
Technical Interview Questions: What are the assumptions for Linear Regression? What is a Random Forest? How is a decision tree built?
what's the angle of the 2 feet @ 3:15 on an analog watch.
What’s the probability of a type 1 error. What happens when the sampling distribution is altered (e.g. filtering out all values below the mean) and how does it effect type 1 errors.
There were several statistical questions and sql tests.
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