slide1 bme adat_2016
TRANSCRIPT
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session#1 Divényi János @divenyi.janos
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How to find answersto relevant questions
using data
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QUESTION
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QUESTION
DATA
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QUESTION
DATA
ANALYSIS
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QUESTION
DATA
ANALYSIS
PRESENTATION
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QUESTION
DATA
ANALYSIS
PRESENTATION
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QUESTION
DATA
ANALYSIS
PRESENTATION
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Prof. Hal Varian UC Berkeley, Chief Economist at Google
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Prof. Hal Varian UC Berkeley, Chief Economist at Google
„If you are looking for a careerwhere your services will be in high
demand, you should find something where you provide a scarce, complementary service
to something that is gettingubiquitous and cheap.”
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Prof. Hal Varian UC Berkeley, Chief Economist at Google
„So what’s getting ubiquitous and cheap?Data.
And what is complementary to data? Analysis.”
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2014 Dice Tech Salary Survey (17,000 technology proffessionals from the US)
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b.socrative.com
Student login into room BMEADAT
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Personalized sending times
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How doesa new piece of
informationaffects
what we knowabout the world?
ww
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P(A|B)conditional probability
probability that A occurs given than B has occurred
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Explained Visually
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Problem #1
Mr. Jones has two children. The older child is a boy. What is the
probability that both children are boys?
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Problem #1
Mr. Jones has two children. The older child is a boy. What is the
probability that both children are boys?
1/2
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Problem #2
Mr. Smith has two children.At least one of them is a boy. What is the probability that both children are boys?
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Problem #2
Mr. Smith has two children.At least one of them is a boy. What is the probability that both children are boys?
1/3
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Problem #3
Mr. Gardner has two children. At least one of them is a boy born on Tuesday. What is the
probability that both children are boys?
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Problem #3
Mr. Gardner has two children. At least one of them is a boy born on Tuesday. What is the
probability that both children are boys?
13/27
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https://xkcd.com/795/
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How doesa new piece of
informationaffects
what we knowabout the world?
ww
w.b
igst
ock
phot
o.co
m