Work through these documents in the order listed here. If you jump directly to the "bit you are interested in" you are likely to struggle, unless you are already familiar with R (in which case, this site is not intended for you).
Getting started with R
Why R? |
How to get started with R |
Handy list of R commands |
Data in R |
Types of data
|
Navigation |
Getting data in and out of R |
Missing values |
Getting data out of R |
Quitting R
Descriptive statistics
Tables |
Graphs |
Summary statistics - simple numbers from R
Graphs
Basic procedures |
Scatter plots and line graphs |
Boxplots |
Pie charts |
Histograms and error bars
Exploratory Data Analysis (EDA) and the Normal Distribution
The normal frequency distribution |
Boxplots |
Stemplots |
QQ plots |
The Shapiro-Wilk test
Univariate data
Thinking about data |
Choosing a statistical test |
Parametric and non-parametric tests |
One-sample t test |
Wilcoxon test |
Chi square goodness of fit test
Bivariate data
Choosing a statistical test |
Dependent and independent variables |
Student's t test: Unpaired t test, Paired t test |
Pearson correlation test |
Linear regression |
Wilcoxon rank sum test |
Chi square test of homogeneity |
Chi square test of independence |
Fisher's Exact test |
Wilcoxon signed rank test for paired data |
Spearman correlation test |
Kendall's tau
Multivariate data
Choosing a statistical test |
ANOVA |
Kruskal-Wallis test |
Chi square test of independence |
Friedman test
