## ISLR chapter 03. Linear Regression_3.1 Simple Linear Regression

From below I’ve quoted some paragraphs from page 59~page 70  directly in the ISLR book.   Recall the Advertising data from Chapter 2. The figure below displays sales for a particular product as a function of advertising budgets for TV, radio, and newspaper media. Suppose that in our role as statistical consultants we are asked …

## ISLR chapter 02. Statistical Learning

2.1 What Is Statistical Learning? X : input variables; predictors; independent variables Y : output variables; response; dependent variable Suppose that we observe a quantitative response Y and p different predictors, . We assume that there is some relationship between Y and 《Very general form》   2.1.1 Why Estimate f ? ① Prediction We can …

## ISLR chapter 01. Introduction

A Brief History of Statistical Learning Though the term statistical learning is fairly new, many of the concepts that underlie the field were developed long ago. At the beginning of the nineteenth century, Legendre and Gauss published papers on the method of least squares, which implemented the first successfully applied to problems in astronomy. Linear …