USEP Webinar Day 04
Topics Covered
1 Preliminaries
- 1.1 Setting Up RStudio
- 1.2 Installing the needed R packages
One-Way ANOVA
2 Data Entry
3 Data Manipulation
4 Data Visualization
5 Hypothesis Testing
6 Checking Assumptions
- 6.1 Checking Normality Assumptions
- 6.2 Checking Homogeneity of Variance Assumption
7 Post-hoc
Two-Way ANOVA
8 Data Entry
9 Data Manipulation
10 Data Visualization
11 Hypothesis Testing
- 11.1 The Two-Way ANOVA Table with Main Effects Only
- 11.2 The Two-Way ANOVA Table with Interactions
12 Checking Assumptions
- 12.1 Checking Normality Assumptions
- 12.2 Checking Homogeneity of Variance Assumption
13 Mean Line or Interaction Plots
References
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Day 4: One-Way and Two-Way ANOVA using R

10 Data Visualization

ggboxplot(clean_twoway_data,
          x = "Fertilizer",
          y = "Yield",
          fill = "Manure")