14.1 Load packages and import data

Load the tidyverse, knitr, naniar, car, skimr, and janitor packages:

library(tidyverse)
library(knitr)
library(naniar)
library(janitor)
library(skimr)
library(car)

And we also need the broom package, which may be new to you.

library(broom)

The following datasets are required:

• the “blackbird” dataset. These are the data associated with Example 12.2 in the text (page 330)
• the “students” dataset, describing characteristics of students from BIOL202 from several years back

blackbird <- read_csv("https://raw.githubusercontent.com/ubco-biology/BIOL202/main/data/blackbird.csv")

## Rows: 26 Columns: 3
## ── Column specification ──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
## Delimiter: ","
## chr (1): time
## dbl (2): blackbird, Antibody
## 
## ℹ Use `spec()` to retrieve the full column specification for this data.
## ℹ Specify the column types or set `show_col_types = FALSE` to quiet this message.

students <- read_csv("https://raw.githubusercontent.com/ubco-biology/BIOL202/main/data/students.csv")

## Rows: 154 Columns: 6
## ── Column specification ──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
## Delimiter: ","
## chr (3): Dominant_hand, Dominant_foot, Dominant_eye
## dbl (3): height_cm, head_circum_cm, Number_of_siblings
## 
## ℹ Use `spec()` to retrieve the full column specification for this data.
## ℹ Specify the column types or set `show_col_types = FALSE` to quiet this message.