Sayısal vs. kategorik görselleştirme

Açıklayıcı değişken kategorikse, veriyi görselleştirmek için daha önce kullandığın saçılım grafiği mantıklı olmaz. Bunun yerine, her kategori için bir histogram çizmek iyi bir seçenektir.

Tayvan emlak veri kümesinde, her evin yaşı şeklinde bir kategorik değişken var. Yaşlar 3 gruba ayrılmış: 0–15 yıl, 15–30 yıl ve 30–45 yıl.

taiwan_real_estate hazır ve ggplot2 yüklü.

Bu egzersiz

R'da Regresyona Giriş

kursunun bir parçasıdır

Kursu Görüntüle

Egzersiz talimatları

taiwan_real_estate kullanarak, price_twd_msq için 10 bölmeli bir histogram çiz.
Grafiği house_age_years ile facet ederek 3 panel oluştur.

Uygulamalı interaktif egzersiz

Bu örnek kodu tamamlayarak bu egzersizi bitirin.

# Using taiwan_real_estate, plot price_twd_msq
___ +
  # Make it a histogram with 10 bins
  ___ +
  # Facet the plot so each house age group gets its own panel
  ___

Kodu Düzenle ve Çalıştır

Bu egzersiz

R'da Regresyona Giriş

kursunun bir parçasıdır

IntermediárioNível de habilidade

4.8+

Kursa Ücretsiz Başlayın

You’ll learn the basics of this popular statistical model, what regression is, and how linear and logistic regressions differ. You’ll then learn how to fit simple linear regression models with numeric and categorical explanatory variables, and how to describe the relationship between the response and explanatory variables using model coefficients.

Exercise 1: İki değişkenin öyküsü Exercise 2: Hangisi tepki değişkeni?Exercise 3: İki değişkeni görselleştirme Exercise 4: Doğrusal regresyonu uydurma Exercise 5: Kesişimi tahmin et Exercise 6: Eğimi tahmin et Exercise 7: lm() ile doğrusal regresyon Exercise 8: Kategorik açıklayıcı değişkenler Exercise 9: Sayısal vs. kategorik görselleştirme

Geçerli Egzersiz

Exercise 10: Kategorilere göre ortalama hesaplama Exercise 11: Kategorik bir açıklayıcı değişkenle lm()

In this chapter, you’ll discover how to use linear regression models to make predictions on Taiwanese house prices and Facebook advert clicks. You’ll also grow your regression skills as you get hands-on with model objects, understand the concept of "regression to the mean", and learn how to transform variables in a dataset.

Exercise 1: Making predictions Exercise 2: Predicting house prices Exercise 3: Visualizing predictions Exercise 4: The limits of prediction Exercise 5: Working with model objects Exercise 6: Extracting model elements Exercise 7: Manually predicting house prices Exercise 8: Using broom Exercise 9: Regression to the mean Exercise 10: Home run!Exercise 11: Plotting consecutive portfolio returns Exercise 12: Modeling consecutive returns Exercise 13: Transforming variables Exercise 14: Transforming the explanatory variable Exercise 15: Transforming the response variable too

In this chapter, you’ll learn how to ask questions of your model to assess fit. You’ll learn how to quantify how well a linear regression model fits, diagnose model problems using visualizations, and understand the leverage and influence of each observation used to create the model.

Exercise 1: Quantifying model fit Exercise 2: Coefficient of determination Exercise 3: Residual standard error Exercise 4: Visualizing model fit Exercise 5: Residuals vs. fitted values Exercise 6: Q-Q plot of residuals Exercise 7: Scale-location Exercise 8: Drawing diagnostic plots Exercise 9: Outliers, leverage, and influence Exercise 10: Leverage Exercise 11: Influence Exercise 12: Extracting leverage and influence

Learn to fit logistic regression models. Using real-world data, you’ll predict the likelihood of a customer closing their bank account as probabilities of success and odds ratios, and quantify model performance using confusion matrices.

Exercise 1: Why you need logistic regression Exercise 2: Exploring the explanatory variables Exercise 3: Visualizing linear and logistic models Exercise 4: Logistic regression with glm()Exercise 5: Predictions and odds ratios Exercise 6: Probabilities Exercise 7: Most likely outcome Exercise 8: Odds ratio Exercise 9: Log odds ratio Exercise 10: Quantifying logistic regression fit Exercise 11: Calculating the confusion matrix Exercise 12: Measuring logistic model performance Exercise 13: Accuracy, sensitivity, specificity Exercise 14: Congratulations