---
title: "Regression Analysis using R and SAS"
author: "Sungchan Kang"
date: "2019-09-27T05:09:07Z"
tags: [String]
link: "https://bookdown.org/rjmcmc/regression_analysis_using_r_and_sas/"
length_weight: "1.2%"
repo: "rstudio/bookdown-demo"
pinned: false
---

This place is for writing regression book. [...] Before we talk about regression theory, we need to review some basic statistical inference methods and matrix algebra. This book referred from many books including rowlings’ “Applied Regression Analysis: A research Tool”. \(\beta=(\mathbf{X'X})^{-1}\mathbf{X'y}\). A matrix is a square shape array of numbers (sometimes can be string). In this book, boldface letters mean matrices. For example,
\[
\mathbf{A}=
\begin{pmatrix}
65 & 154 \\
73 & 182 \\
68 &167
\end{pmatrix}.
\] This is a sample book written in Markdown. You can use anything that ...
