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每日一练 | Data Scientist & Business Analyst 面试题 186

大数据应用  · 公众号  · 大数据  · 2017-09-11 08:56

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从6月15日起,数据应用学院将与你一起温习数据科学(DS)和商业分析(BA)领域常见的面试问题。希望积极寻求相关领域工作的你每天关注我们的问题并且与我们一起思考,我们将会在第二天给出答案。

Day 86

DS Interview Questions

What is a point estimate?

BA Interview Questions

Mention what does not ‘R’ language do?

欲知答案如何?请见下期分解!

Day 85 答案揭晓

DS Interview Questions

What is the difference between usual statistical analysis and time series analysis?

Time series analysis accounts for the autocorrelation between time events, which is the next value in a time series is affected by the earlier values in the time series. Time series analysis accounts for the fact that data points taken over time may have an internal structure (such as autocorrelation, trend or seasonal variation) that should be accounted for.

BA Interview Questions

write a query to  display the employee number, name( first name and last name ) and job title for all employees whose salary is smaller than any salary of those employees whose job title is MK_MAN. Exclude Job title MK_MAN

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