# What is a "real" data scientist? (credentials to be distinguished from "fake" DS: Excel/SQL junkie, BIE or data analyst)

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Oct 13
36 Comments

One who has mastered knowledge of...

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LOG INorSIGN UPTOP36 CommentsData scientists come up with formulas to represent an environment of data. They know how to fine tune the model and know how to respond to unfamiliar results.

BI simply plug data into variables and report it to a BU.

Source: former data scientist

Picking one of the responses is an insufficient response to the underlying question.

OPI hate brain teaser actually precisely because they’re biased towards people who train in them. They’re all out there for folks to prepare thus they lose their actual teasing quality

OPOPOPOPML models & NNs

mathematical statistics

optimization theory

stochastic processes

probability theory

without the necessary prerequisites in linear algebra, diff eqs., and real analysis? It seems contradictory.

Stats, prob, Lin alg, and optimization will get you pretty far.

OPOPCan any real DS comment on the most advanced thing they had used?

For me, the most advanced thing was to create an algorithm that turned into a paper at a top-3 ML/DL conference.

OPEverything else is interchangeable, though at least a few boxes should be checked per individual.