I'm sorry but how is this a good example interview? The interviewee went off track the whole time by proposing an irrelevant AB test that hardly does any good to the business and the interviewer ironically went along with this direction. Why bother doing that AB test when it's already stated in the question that revenue is up and user searches is down? On top of that she failed to clarify some critical parts of the case - context around "increased the # of ads shown after a subset of searches", why user searches went down (since this is not a metric diagnosis case the interviewer should at least give some details on whether it's a decrease in searches per user or user count, etc.), info on ad CTR, business goals/priorities, etc. Please give us more carefully selected content next time, thanks!!
The interviewer is a senior Data Scientist from Google? she doesn’t seem to even understand what a null hypothesis is versus What is a data investigation hypothesis
I'm sorry but how is this a good example interview? The interviewee went off track the whole time by proposing an irrelevant AB test that hardly does any good to the business and the interviewer ironically went along with this direction. Why bother doing that AB test when it's already stated in the question that revenue is up and user searches is down? On top of that she failed to clarify some critical parts of the case - context around "increased the # of ads shown after a subset of searches", why user searches went down (since this is not a metric diagnosis case the interviewer should at least give some details on whether it's a decrease in searches per user or user count, etc.), info on ad CTR, business goals/priorities, etc.
Please give us more carefully selected content next time, thanks!!
Exactly!
The interviewer is a senior Data Scientist from Google? she doesn’t seem to even understand what a null hypothesis is versus What is a data investigation hypothesis
Bad example ! The interviewee is not on track
0:32 ehehe...!