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DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer Instructor

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Page 1: MULTIPLE AND LOGISTIC REGRESSION - s3.amazonaws.com · DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer ... , 20, 24,

DataCamp MultipleandLogisticRegression

ItalianrestaurantsinNYC

MULTIPLEANDLOGISTICREGRESSION

BenBaumerInstructor

Page 2: MULTIPLE AND LOGISTIC REGRESSION - s3.amazonaws.com · DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer ... , 20, 24,

DataCamp MultipleandLogisticRegression

Page 3: MULTIPLE AND LOGISTIC REGRESSION - s3.amazonaws.com · DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer ... , 20, 24,

DataCamp MultipleandLogisticRegression

Page 4: MULTIPLE AND LOGISTIC REGRESSION - s3.amazonaws.com · DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer ... , 20, 24,

DataCamp MultipleandLogisticRegression

Exploringthedataglimpse(nyc)

##Observations:168##Variables:7##$Case<int>1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,...##$Restaurant<fctr>DaniellaRistorante,Tello'sRistorante,Biricchin...##$Price<int>43,32,34,41,54,52,34,34,39,44,45,47,52,...##$Food<int>22,20,21,20,24,22,22,20,22,21,19,21,21,...##$Decor<int>18,19,13,20,19,22,16,18,19,17,17,19,19,...##$Service<int>20,19,18,17,21,21,21,21,22,19,20,21,20,...##$East<int>0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,...

Page 5: MULTIPLE AND LOGISTIC REGRESSION - s3.amazonaws.com · DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer ... , 20, 24,

DataCamp MultipleandLogisticRegression

EDApairs(nyc)

Page 6: MULTIPLE AND LOGISTIC REGRESSION - s3.amazonaws.com · DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer ... , 20, 24,

DataCamp MultipleandLogisticRegression

Let'spractice!

MULTIPLEANDLOGISTICREGRESSION

Page 7: MULTIPLE AND LOGISTIC REGRESSION - s3.amazonaws.com · DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer ... , 20, 24,

DataCamp MultipleandLogisticRegression

Incorporatinganothervariable

MULTIPLEANDLOGISTICREGRESSION

BenBaumerInstructor

Page 8: MULTIPLE AND LOGISTIC REGRESSION - s3.amazonaws.com · DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer ... , 20, 24,

DataCamp MultipleandLogisticRegression

By<ahref="//commons.wikimedia.org/wiki/User:A._Balet"

Page 9: MULTIPLE AND LOGISTIC REGRESSION - s3.amazonaws.com · DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer ... , 20, 24,

DataCamp MultipleandLogisticRegression

Page 10: MULTIPLE AND LOGISTIC REGRESSION - s3.amazonaws.com · DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer ... , 20, 24,

DataCamp MultipleandLogisticRegression

Page 11: MULTIPLE AND LOGISTIC REGRESSION - s3.amazonaws.com · DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer ... , 20, 24,

DataCamp MultipleandLogisticRegression

Thepriceoflocationnyc%>%group_by(East)%>%summarize(mean_price=mean(Price))

#Atibble:2x2Eastmean_price<int><dbl>1040.435482144.01887

Page 12: MULTIPLE AND LOGISTIC REGRESSION - s3.amazonaws.com · DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer ... , 20, 24,

DataCamp MultipleandLogisticRegression

Page 13: MULTIPLE AND LOGISTIC REGRESSION - s3.amazonaws.com · DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer ... , 20, 24,

DataCamp MultipleandLogisticRegression

Let'spractice!

MULTIPLEANDLOGISTICREGRESSION

Page 14: MULTIPLE AND LOGISTIC REGRESSION - s3.amazonaws.com · DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer ... , 20, 24,

DataCamp MultipleandLogisticRegression

Higherdimensions

MULTIPLEANDLOGISTICREGRESSION

BenBaumerInstructor

Page 15: MULTIPLE AND LOGISTIC REGRESSION - s3.amazonaws.com · DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer ... , 20, 24,

DataCamp MultipleandLogisticRegression

Page 16: MULTIPLE AND LOGISTIC REGRESSION - s3.amazonaws.com · DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer ... , 20, 24,

DataCamp MultipleandLogisticRegression

BuildingafullmodelResponsevariable:

PriceExplanatoryvariables

FoodServiceDecorEast(categorical)

UnusableCaseRestaurant

Page 17: MULTIPLE AND LOGISTIC REGRESSION - s3.amazonaws.com · DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer ... , 20, 24,

DataCamp MultipleandLogisticRegression

Collinearitynyc%>%mutate(Price_cents=Price/100)%>%summarize(cor_collinear=cor(Price,Price_cents))

##cor_collinear##11

Page 18: MULTIPLE AND LOGISTIC REGRESSION - s3.amazonaws.com · DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer ... , 20, 24,

DataCamp MultipleandLogisticRegression

MulticollinearityExplanatoryvariablesarehighlycorrelatedUnstablecoefficientestimatesDoesn'taffectRBeskepticalofsurprisingresults

2

Page 19: MULTIPLE AND LOGISTIC REGRESSION - s3.amazonaws.com · DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer ... , 20, 24,

DataCamp MultipleandLogisticRegression

Let'spractice!

MULTIPLEANDLOGISTICREGRESSION

Page 20: MULTIPLE AND LOGISTIC REGRESSION - s3.amazonaws.com · DataCamp Multiple and Logistic Regression Italian restaurants in NYC MULTIPLE AND LOGISTIC REGRESSION Ben Baumer ... , 20, 24,

DataCamp MultipleandLogisticRegression

Wrap-up

MULTIPLEANDLOGISTICREGRESSION

BenBaumerInstructor


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Logistic Regression - cs.wellesley.educs.wellesley.edu/~cs305/lectures/6_Logistic_Regression.pdfLogistic Regression Logistic regression is used for classification, not regression!

IV. MULTIPLE LOGISTIC REGRESSION Extend simple logistic regression to models with multiple covariates Similarity between multiple linear and multiple

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Logistic Regression and Discriminant Analysis · 2018-04-16 · Discriminant Analysis? Logistic Regression . Logistic Regression •Logistic regression builds a predictive model for

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