```{r}
#| label: youth-dist
ggplot(data = youth, mapping = aes(x = age)) +
geom_freqpoly(binwidth = 1)
```
Gun deaths
Suggested answers
Application exercise
Answers
---
title: "Gun deaths"
author: "Benjamin Soltoff"
date: today
format:
html:
toc: true
theme:
light: flatly
dark: darkly
execute:
echo: false
cache: true
knitr:
opts_chunk:
fig-width: 8
fig-height: 6
---
Gun deaths by age
We have data about 100798 individuals killed by guns. Only 15687 are older than 65. The distribution of the remainder is shown below:
There appear to be two modal values in this distribution. The peak number of gun death victims by age is around 22 years old. There is a smaller, but noticable, peak around age 50.
Gun deaths by race
```{r}
#| label: race-dist
youth |>
mutate(race = fct_infreq(race) |> fct_rev()) |>
ggplot(mapping = aes(y = race)) +
geom_bar() +
labs(y = "Victim race")
```
Session information
```{r}
#| cache: false
sessioninfo::session_info()
```─ Session info ───────────────────────────────────────────────────────────────
setting value
version R version 4.3.1 (2023-06-16)
os macOS Ventura 13.5.2
system aarch64, darwin20
ui X11
language (EN)
collate en_US.UTF-8
ctype en_US.UTF-8
tz America/New_York
date 2023-11-01
pandoc 3.1.1 @ /Applications/RStudio.app/Contents/Resources/app/quarto/bin/tools/ (via rmarkdown)
─ Packages ───────────────────────────────────────────────────────────────────
package * version date (UTC) lib source
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codetools 0.2-19 2023-02-01 [1] CRAN (R 4.3.0)
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digest 0.6.33 2023-07-07 [1] CRAN (R 4.3.0)
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evaluate 0.22 2023-09-29 [1] CRAN (R 4.3.1)
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farver 2.1.1 2022-07-06 [1] CRAN (R 4.3.0)
fastmap 1.1.1 2023-02-24 [1] CRAN (R 4.3.0)
forcats * 1.0.0 2023-01-29 [1] CRAN (R 4.3.0)
generics 0.1.3 2022-07-05 [1] CRAN (R 4.3.0)
ggplot2 * 3.4.2 2023-04-03 [1] CRAN (R 4.3.0)
glue 1.6.2 2022-02-24 [1] CRAN (R 4.3.0)
gtable 0.3.3 2023-03-21 [1] CRAN (R 4.3.0)
here 1.0.1 2020-12-13 [1] CRAN (R 4.3.0)
hms 1.1.3 2023-03-21 [1] CRAN (R 4.3.0)
htmltools 0.5.6.1 2023-10-06 [1] CRAN (R 4.3.1)
htmlwidgets 1.6.2 2023-03-17 [1] CRAN (R 4.3.0)
jsonlite 1.8.7 2023-06-29 [1] CRAN (R 4.3.0)
knitr 1.44 2023-09-11 [1] CRAN (R 4.3.0)
labeling 0.4.2 2020-10-20 [1] CRAN (R 4.3.0)
lifecycle 1.0.3 2022-10-07 [1] CRAN (R 4.3.0)
lubridate * 1.9.2 2023-02-10 [1] CRAN (R 4.3.0)
magrittr 2.0.3 2022-03-30 [1] CRAN (R 4.3.0)
munsell 0.5.0 2018-06-12 [1] CRAN (R 4.3.0)
pillar 1.9.0 2023-03-22 [1] CRAN (R 4.3.0)
pkgconfig 2.0.3 2019-09-22 [1] CRAN (R 4.3.0)
purrr * 1.0.2 2023-08-10 [1] CRAN (R 4.3.0)
R6 2.5.1 2021-08-19 [1] CRAN (R 4.3.0)
rcis * 0.2.7 2023-06-19 [1] local
readr * 2.1.4 2023-02-10 [1] CRAN (R 4.3.0)
rlang 1.1.1 2023-04-28 [1] CRAN (R 4.3.0)
rmarkdown 2.25 2023-09-18 [1] CRAN (R 4.3.1)
rprojroot 2.0.3 2022-04-02 [1] CRAN (R 4.3.0)
rstudioapi 0.14 2022-08-22 [1] CRAN (R 4.3.0)
scales 1.2.1 2022-08-20 [1] CRAN (R 4.3.0)
sessioninfo 1.2.2 2021-12-06 [1] CRAN (R 4.3.0)
stringi 1.7.12 2023-01-11 [1] CRAN (R 4.3.0)
stringr * 1.5.0 2022-12-02 [1] CRAN (R 4.3.0)
tibble * 3.2.1 2023-03-20 [1] CRAN (R 4.3.0)
tidyr * 1.3.0 2023-01-24 [1] CRAN (R 4.3.0)
tidyselect 1.2.0 2022-10-10 [1] CRAN (R 4.3.0)
tidyverse * 2.0.0 2023-02-22 [1] CRAN (R 4.3.0)
timechange 0.2.0 2023-01-11 [1] CRAN (R 4.3.0)
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withr 2.5.1 2023-09-26 [1] CRAN (R 4.3.1)
xfun 0.40 2023-08-09 [1] CRAN (R 4.3.0)
yaml 2.3.7 2023-01-23 [1] CRAN (R 4.3.0)
[1] /Library/Frameworks/R.framework/Versions/4.3-arm64/Resources/library
──────────────────────────────────────────────────────────────────────────────