Introduction into Data Analysis

session#1 of my data analysis course at Budapest University of Economics and Technology

Transcript

1. session#1 Divényi János @divenyi.janos
3. How to find answers to relevant questions using data
5. QUESTION
6. QUESTION DATA
7. QUESTION DATA ANALYSIS
8. QUESTION DATA ANALYSIS PRESENTATION
9. QUESTION DATA ANALYSIS PRESENTATION
10. QUESTION DATA ANALYSIS PRESENTATION
13. Prof. Hal Varian UC Berkeley, Chief Economist at Google
14. Prof. Hal Varian UC Berkeley, Chief Economist at Google „If you are looking for a career where your services will be in high demand, you should find something where you provide a scarce, complementary service to something that is getting ubiquitous and cheap.”
15. Prof. Hal Varian UC Berkeley, Chief Economist at Google „So what’s getting ubiquitous and cheap? Data. And what is complementary to data? Analysis.”
19. 2014 Dice Tech Salary Survey (17,000 technology proffessionals from the US)
20. b.socrative.com Student login into room BMEADAT
21. Personalized sending times
23. How does a new piece of information affects what we know about the world? www.bigstockphoto.com
26. P(A|B) conditional probability probability that A occurs given than B has occurred
27. Explained Visually
28. Problem #1 Mr. Jones has two children. The older child is a boy. What is the probability that both children are boys?
29. Problem #1 Mr. Jones has two children. The older child is a boy. What is the probability that both children are boys? 1/2
30. Problem #2 Mr. Smith has two children. At least one of them is a boy. What is the probability that both children are boys?
31. 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
32. 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?
33. 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
34. https://xkcd.com/795/
35. How does a new piece of information affects what we know about the world? www.bigstockphoto.com