test.Rmd

---
title: "R Notebook"
output: html_notebook
author: Willi Mutschler
---

This is an [R Markdown](http://rmarkdown.rstudio.com) Notebook. When you execute code within the notebook, the results appear beneath the code. 

Try executing this chunk by clicking the *Run* button within the chunk or by placing your cursor inside it and pressing *Ctrl+Shift+Enter*. 

```{r}
plot(cars)
```

Add a new chunk by clicking the *Insert Chunk* button on the toolbar or by pressing *Ctrl+Alt+I*.
```{r}
library(descriptr)
ds_screener(mtcarz)
ds_auto_summary_stats(mtcarz, disp, mpg)
k <- ds_freq_table(mtcarz, mpg, 4)
plot(k)
k <- ds_group_summary(mtcarz, cyl, mpg)
k
ds_measures_location(mtcarz)
ds_measures_variation(mtcarz)
```

When you save the notebook, an HTML file containing the code and output will be saved alongside it (click the *Preview* button or press *Ctrl+Shift+K* to preview the HTML file).

The preview shows you a rendered HTML copy of the contents of the editor. Consequently, unlike *Knit*, *Preview* does not run any R code chunks. Instead, the output of the chunk when it was last run in the editor is displayed.