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National Taiwan University

商管統計資料分析一 (Analytics for Business and Management (I))

National Taiwan University via Coursera

Overview

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本課程為三模組系列課程之第一模組。 此系列課程專門教授各種線性迴歸形式 (regression-type) 的統計分析模型與技術。此系列課程以大量多樣之商管實務案例進行解說,並以 R 統計語言進行建模分析,提供完整的命令稿 (script) 與資料集讓同學們實地操作演練,培養統計分析思維與實戰技能。 本第一模組是築基課程,講述統計分析與迴歸模型的基本觀念,包括統計思維 (statistical thinking)、探索型資料分析 (EDA, Exploratory Data Analysis)、迴歸模型的原理與前提條件、參數估計與假設檢定、模型評估與詮釋、預測與應用、變數轉換與選擇、離群值與建模陷阱等。

Syllabus

  • Statistical Thinking
    • 本單元介紹:1.統計思維、流程觀點、資料/數據的意義與角色;2.分析學 (analytics) 的層級;3.資料的基本形式、統計學的關鍵觀念;4.讓統計學成為商管競爭優勢
  • Exploratory Data Analysis (EDA)
    • 本單元介紹:1.R統計語言的基本操作;2.探索型資料分析(EDA, Exploratory Data Analysis):Summarizing data、Representing data、Examples with R
  • Linear Model: Simple Linear Regression (SLR)
    • 本單元介紹:1.Simple Linear Regression (SLR);2.Least squares estimators;3.Goodness of fit – coefficient of determination (R2);4.Assumptions about SLR model;5.Statistical inference of least squares estimators;6.Model diagnosis – checking model assumptions;7.Prediction
  • Linear Model: Multiple Linear Regression (MLR)
    • 本單元介紹:1.Multiple Linear Regression (MLR);2.Least squares estimators …;3.Model assessment: R2 and Adjusted R2…;4.Assumptions about residual standard errors;5.Statistical inference: (1) Global usefulness test、(2) Nested model test / Extra-sums-of-squares test、(3) Individual test;6.Model building;7.Model diagnosis;8.Using the regression model: CI & PI
  • Linear Model: Transformation and Variable Selection in MLR
    • 本單元介紹:1.Variable Transformations: (1) Natural log、(2) Polynomial、(3) Reciprocal;2.Influential Points: (1) Outliers、(2) High Leverage Points、(3) Cook’s distance;3.Variable Selection: (1) Testing-based procedures、(2) Criterion-based procedures;4.Regression Pitfalls (1) Multicollinearity、(2) Important predictor excluded、(3) Overfitting、(4) Extrapolation

Taught by

余峻瑜

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