Which statistic term is that regression models are based on?
Data Interview Questions
132,942 data interview questions shared by candidates
Why you are using your pipeline as it is why you are not a decision maker in your organization?
Can not speak any thing on this.
Suppose you have n x_i real numbers. Find a such that the sum of (x_i-a)^2 is minimal.
lots of probability questions but they were not too hard
How much are you willing to pay to play the following game? You start with $1. You flip a fair coin. If it lands on heads, you double your winnings and flip again. If it lands on tails, the game is over and you collect the money you've won. You continue playing until you land on tails.
Q: how to evaluate a classifier; how to select features
Tell me about a time when you solved a problem using your analytical problem solving skills.
How to prevent over-fitting?
Find customer sales timeseries whose moving averages have positive slope, except the average should only be over two days, and the lead day changes, and actually it should be (customer, day) pairs, or triples with total sales, we're not sure actually what we want but it's definitely a very complicated SQL query. No. More complicated. What do you mean "use pandas?" Pandas and SQL are the same thing. SQL is column-oriented. I've never heard of KDB. That's something you made up.
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