Doğrusal olmayan fonksiyonları doğrusal hâle getirme

Mikrobira imalathanesi işini büyütmeyi ve Hoppiness'i ülke çapında sunmayı planlıyor. Bu yüzden, fiyatlandırma kararları birden fazla mağaza için yönetici tarafından verilmek zorunda.

Mağazalar yalnızca konumda değil, aynı zamanda aktivitelerinde ve hacim satış sayılarında da farklılık gösterebilir. Bir çözüm, PRICE'daki değişimleri SALES'daki değişimlere göre açıklamaktır. Bu, SALES'in log()'u alınarak sağlanır. Karşılık gelen log(SALES) ~ PRICE ilişkisi yine lm() fonksiyonu ile tahmin edilir ve ortaya çıkan doğrusal olmayan satış tepki modeli katsayıları üzerinden incelenir.

Bu egzersiz

R ile Tepki Modelleri Oluşturma

kursunun bir parçasıdır

Kursu Görüntüle

Egzersiz talimatları

log(SALES)'i PRICE ile açıkla. lm() fonksiyonunu kullan ve sonucu log.model adlı bir nesneye ata.
coef() fonksiyonunu kullanarak log.model nesnesinin model katsayılarını elde et.

Uygulamalı interaktif egzersiz

Bu örnek kodu tamamlayarak bu egzersizi bitirin.

# Explain log(SALES) by PRICE
log.model <- ___(___, data = sales.data)

# Obtain the model coefficients

Kodu Düzenle ve Çalıştır

Bu egzersiz

R ile Tepki Modelleri Oluşturma

kursunun bir parçasıdır

IntermediárioNível de habilidade

4.8+

Kursa Ücretsiz Başlayın

The first chapter introduces you to the basic principles and concepts of market response models. Here, you will learn how to build simple response models for product sales. In addition, you will learn about the theoretical and practical differences between linear and non-linear models for sales responses.

Exercise 1: Pazar tepki modellerinin temelleri Exercise 2: Perakende satışlar Exercise 3: Satışları anlama Exercise 4: Doğrusal tepki modelleri Exercise 5: Satışlar için doğrusal bir tepki modeli Exercise 6: Tahminler yapmak Exercise 7: Öngörü performansı Exercise 8: Doğrusal olmayan tepki modelleri Exercise 9: Doğrusal olmayan fonksiyonları doğrusal hâle getirme

Geçerli Egzersiz

Exercise 10: Eklenen değer ne?

An effective marketing strategy combines all the tools available to communicate the benefits of a product. The key is crafting the right mix of these tools to achieve sales increases and market share goals. In the second chapter, you will learn how to incorporate the effects of advertising and promotion in your sales-response model and how to identify the marketing strategy that is most likely to succeed.

Exercise 1: Model extension part 1: Dummy variables Exercise 2: Understanding dummy variables Exercise 3: The effect of display on sales Exercise 4: The effect of multiple dummies on sales Exercise 5: What about price?Exercise 6: Model extensions part 2: Dynamic variables Exercise 7: How to lag?Exercise 8: Adding lagged price effects Exercise 9: More lags Exercise 10: What's the value added?Exercise 11: How many extensions are needed?Exercise 12: Summarizing the model Exercise 13: Unnecessary predictors Exercise 14: Dropping predictors Exercise 15: Eliminating predictors

A company can only be successful in the market if its products have a competitive advantage over those of its rivals. To develop an effective marketing strategy in a competitive environment, it is essential to understand the interrelationship between marketing activity and customer behavior. In this chapter, you will learn how to explain the effects of temporary price changes on customer brand choice by employing logistic and probit response models.

Exercise 1: Models for individual demand Exercise 2: Customer purchases Exercise 3: Summarizing the data Exercise 4: Competition Exercise 5: A linear probability model for beer demand Exercise 6: Logistic response models Exercise 7: A logistic model for beer demand Exercise 8: Bounded predictions Exercise 9: Average marginal effects Exercise 10: Effect plots Exercise 11: Probit response models Exercise 12: A probit model for beer demand Exercise 13: Logistic vs. probit Exercise 14: Model comparison

The main goal of response modeling is to enable marketers to not only see a payoff for their actions today, but also tomorrow. In order to view this future payoff, a simple but reliable statistical model is required. In this last chapter, you will learn how to evaluate the predictive performance of logistic response models.

Exercise 1: Model selection Exercise 2: Extending the logistic response model Exercise 3: Summarizing the model Exercise 4: The deviance principle Exercise 5: Eliminating predictors Exercise 6: Predictive performance Exercise 7: Classifications Exercise 8: Model confusion Exercise 9: ROC curves Exercise 10: Model validation Exercise 11: Subsetting Exercise 12: Model training Exercise 13: Out-of-sample testing Exercise 14: Wrapping it up