6610 notes 02/25

	catogorical	Quant
cat	x2 test l ogistic reg	linear reg ANOVA  2- sample t-test
quant	log stc reg	linear reg time series

interview question

what is the assumption of 

Linear Regression

linear

ϵi has E[ϵi]=0

at least one xi is different

xi uncorrelated with ϵi

ϵi has V(ϵi)=σ2

ϵi is indepdent of ϵj

ϵi∼N(0,σ2) so yi|xi∼N(α+βxi,σ2)

01/28

http://rpubs.com/esuess/TimeSeries

pivot table

go search it and learn

DataSF

https://data.sfgov.org/

Beautiful Soup

Beautiful Soup is a Python library for pulling data out of HTML and XML files. It works with your favorite parser to provide idiomatic ways of navigating, searching, and modifying the parse tree. It commonly saves programmers hours or days of work


Beautiful Soup is a Python library for pulling data out of HTML and XML files. It works with your favorite parser to provide idiomatic ways of navigating, searching, and modifying the parse tree. It commonly saves programmers hours or days of work