《1.4 Importing Data and Working With Data in R》

教程列表：

Customizing The Look of R Studio (R Tutorial 1.11)

Correlation and Covariance in R (R Tutorial 4.9)

Checking Linear Regression Assumptions in R (R Tutorial 5.2)

Changing a Numeric Variable to Categorical Variable in R (R Tutorial 5.4)

Change Reference_Baseline Category for a Categorical Variable

Categorical Variables or Factors in Linear Regression in R (R Tutorial 5.7)

Categorical Variables in Linear Regression in R, Example #2 (R Tutorial 5.8)

Boxplots and Boxplots With Groups in R (R Tutorial 2.2)

Binomial Distribution in R (R Tutorial 3.1)

Bar Charts and Pie Charts in R (R Tutorial 2.1)

Analysis of Variance (ANOVA) and Multiple Comparisons in R (R Tutorial 4.6)

Adding Text to Plots in R (R Tutorial 2.9)

Adding Legends to Plots in R (R Tutorial 2.10)

Dummy Variables or Indicator Variables (R Tutorial 5.5)

Multiple Linear Regression with Interaction in R (R Tutorial 5.9)

Multiple Linear Regression in R (R Tutorial 5.3)

Modifying Plots in R (R Tutorial 2.8)

Mann Whitney U aka Wilcoxon Rank-Sum Test in R (R Tutorial 4.3)

Logic Statements (TRUE_FALSE) and cbind and rbind Command in R (R Tutorial 1.7)

Linear Regression in R (R Tutorial 5.1)

Introduction to R Programming_ Getting Started With R (R Tutorial 1.1)

Introduction to R Programming_ Download, Install and Setup R & RStudio

Introduction to R Programming_ Creating Vectors, Matrices, and Other Intro

Interpreting Interaction in Linear Regression (Tutorial 5.10)

Installing Packages in R (R Tutorial 1.10)

Importing Data and Working With Data in R (R Tutorial 1.4)

Import Data, Copy Data from Excel to R, Both .csv and .txt Formats

Histograms in R (R Tutorial 2.3)

Normal Distribution, Z Scores, and Normal Probabilities in R (R Tutorial 3.3)

t Distribution and t Scores in R (R Tutorial 3.4)

Summary Statistics in R_ Mean, Standard Deviation, Frequencies

Relative Risk, Odds Ratio and Risk Difference (aka Attributable Risk) in R

Poisson Distribution in R (R Tutorial 3.2)

Partial F Test for Variable Selection for Linear Regression in R (Tutorial 5.11)

Paired t Test in R (R Tutorial 4.4)

One-Sample t Test in R (R Tutorial 4.1)

Two-Sample t Test in R_ Independent Groups (R Tutorial 4.2)

Working with Variables and Data in R (R Tutorial 1.5)

Wilcoxon Signed Rank Test in R (R Tutorial 4.5)