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session#1 Divényi János @divenyi.janos
How to find answersto relevant questions
using data
QUESTION
QUESTION
DATA
QUESTION
DATA
ANALYSIS
QUESTION
DATA
ANALYSIS
PRESENTATION
QUESTION
DATA
ANALYSIS
PRESENTATION
QUESTION
DATA
ANALYSIS
PRESENTATION
Prof. Hal Varian UC Berkeley, Chief Economist at Google
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.”
Prof. Hal Varian UC Berkeley, Chief Economist at Google
„So what’s getting ubiquitous and cheap?Data.
And what is complementary to data? Analysis.”
2014 Dice Tech Salary Survey (17,000 technology proffessionals from the US)
b.socrative.com
Student login into room BMEADAT
Personalized sending times
How doesa new piece of
informationaffects
what we knowabout the world?
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P(A|B)conditional probability
probability that A occurs given than B has occurred
Explained Visually
Problem #1
Mr. Jones has two children. The older child is a boy. What is the
probability that both children are boys?
Problem #1
Mr. Jones has two children. The older child is a boy. What is the
probability that both children are boys?
1/2
Problem #2
Mr. Smith has two children.At least one of them is a boy. What is the probability that both children are boys?
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
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?
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
https://xkcd.com/795/
How doesa new piece of
informationaffects
what we knowabout the world?
ww
w.b
igst
ock
phot
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m
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