Statistics with R

  1. Data Manipulation with dplyr
    1. dplyr Philosophy
      1. Grammar of Data Manipulation
        1. Tidy Data Principles
          1. Consistent Function Interface
          2. Core dplyr Verbs
            1. filter() Function
              1. Logical Conditions
                1. Multiple Conditions
                  1. String Filtering
                    1. Date Filtering
                    2. select() Function
                      1. Column Selection
                        1. Helper Functions
                          1. Renaming During Selection
                          2. arrange() Function
                            1. Sorting Data
                              1. Multiple Sort Keys
                                1. Descending Order
                                2. mutate() Function
                                  1. Creating New Variables
                                    1. Modifying Existing Variables
                                      1. Conditional Mutations
                                        1. Window Functions
                                        2. summarise() Function
                                          1. Aggregation Functions
                                            1. Multiple Summaries
                                              1. Custom Summary Functions
                                              2. group_by() Function
                                                1. Grouping Concepts
                                                  1. Multiple Grouping Variables
                                                    1. Grouped Operations
                                                  2. The Pipe Operator
                                                    1. Pipe Syntax
                                                      1. Chaining Operations
                                                        1. Code Readability
                                                          1. Debugging Piped Code
                                                            1. Alternative Pipe Operators
                                                            2. Advanced dplyr Operations
                                                              1. across() Function
                                                                1. Conditional Operations
                                                                  1. Row-wise Operations
                                                                    1. Window Functions
                                                                      1. lag() and lead()
                                                                        1. Ranking Functions
                                                                          1. Cumulative Functions
                                                                        2. Joining Data
                                                                          1. Join Concepts
                                                                            1. Inner Joins
                                                                              1. Left Joins
                                                                                1. Right Joins
                                                                                  1. Full Joins
                                                                                    1. Semi Joins
                                                                                      1. Anti Joins
                                                                                        1. Join Keys
                                                                                          1. Multiple Key Joins
                                                                                          2. Data Reshaping
                                                                                            1. Wide vs Long Data
                                                                                              1. pivot_longer() Function
                                                                                                1. pivot_wider() Function
                                                                                                  1. Handling Multiple Value Columns
                                                                                                    1. Separating Columns
                                                                                                      1. Uniting Columns

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                                                                                                    6. Data Cleaning and Preprocessing

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                                                                                                    8. Descriptive Statistics