Added a few intro slides

week1/slides.qmd

@@ -26,6 +26,27 @@ source(here::here("course_info.R"))
 \vspace*{0.4cm}
 \tableofcontents
 
+## First things first
+
+### Expectations
+
+* You know R and RStudio
+* You have a basic understanding of programming (for loops, if statements, functions)
+* You can use Git and GitHub (https://happygitwithr.com)
+
+### Unit resources
+
+* Everything on **https://arp.numbat.space**
+* Assignments submitted on Github Classroom
+* Discussion on Ed
+
+## GitHub
+
+* Use your monash edu address.
+* Apply to GitHub Global Campus as a student (https://education.github.com).
+* Gives you free access to private repos and GitHub Copilot.
+* Add GitHub Copilot to RStudio settings.
+
 # Introduction to R
 ## R history
 
@@ -63,7 +84,7 @@ source(here::here("course_info.R"))
 
 # Names and values
 
-## Quiz
+## Exercises
 \fontsize{12.5}{13}\sf
 
 1.  Given the following data frame, how do I create a new column called "3"
@@ -317,7 +338,7 @@ knitr::include_graphics("../diagrams/name-value/character.png")
 knitr::include_graphics("../diagrams/name-value/character-2.png")
 ```
 
-## Quiz
+## Exercises
 
 4.  Sketch out the relationship between the following objects:
 
@@ -367,7 +388,7 @@ obj_size(c(1:1e6, 10))
 obj_size(2 * (1:1e6))
 ```
 
-## Quiz
+## Exercises
 
 6.  Predict the output of the following code:
 
@@ -602,7 +623,7 @@ sum(x)
 as.integer(c("1", "1.5", "a"))
 ```
 
-## Quiz
+## Exercises
 
 7.  Predict the output of the following:
 
@@ -726,7 +747,7 @@ str(matrix(1:3, nrow = 1)) # row vector
 str(array(1:3, 3))         # "array" vector
 ```
 
-## Quiz
+## Exercises
 
 10. What does `dim()` return when applied to a 1-dimensional vector?
 11. When might you use `NROW()` or `NCOL()`?
@@ -841,7 +862,7 @@ structure(now_ct, tzone = "Australia/Lord_Howe")
 ```
 
 
-## Quiz
+## Exercises
 
 13. What sort of object does `table()` return? What is its type? What
     attributes does it have? How does the dimensionality change as you
@@ -1070,7 +1091,7 @@ str(dfm)
 
 \placefig{10}{1.25}{width=5cm,height=20cm}{../diagrams/vectors/data-frame-matrix.png}
 
-## Quiz
+## Exercises
 
 16.  Can you have a data frame with zero rows? What about zero columns?
 17.  What happens if you attempt to set rownames that are not unique?
@@ -1095,7 +1116,7 @@ is.null(x)
 
 # Subsetting
 
-## Quiz
+## Exercises
 
 20. What is the result of subsetting a vector with positive integers,
     negative integers, a logical vector, or a character vector?
@@ -1104,7 +1125,7 @@ is.null(x)
 23. If `x` is a matrix, what does `x[] <- 0` do? How is it different from `x <- 0`?
 24. How can you use a named vector to relabel categorical variables?
 
-## Quiz
+## Exercises
 \fontsize{13}{14}\sf
 
 25. Fix each of the following common data frame subsetting errors:
@@ -1122,7 +1143,7 @@ is.null(x)
 27. Implement your own function that extracts the diagonal entries from a
     matrix (it should behave like `diag(x)` where `x` is a matrix).
 
-## Quiz
+## Exercises
 
 28. Extract the residual degrees of freedom from `mod`
 
@@ -1133,7 +1154,7 @@ is.null(x)
 
 29. Extract the R squared from the model summary (`summary(mod)`)
 
-## Quiz
+## Exercises
 
 30. How would you randomly permute the columns of a data frame?
 31. Can you simultaneously permute the rows and columns in one step?