---
title: "Fake It Until You Make It"
subtitle: "How and why to simulate research data"
author: "Lisa DeBruine"
execute:
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format: 
  revealjs:
    logo: images/psyteachr_hex.png
    theme: [dark, style.scss]
    transition: none
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---

# Abstract

::: {style="font-size: 24px;"}
Being able to simulate data allows you to prep analysis scripts for pre-registration, calculate power and sensitivity for analyses that don’t have empirical methods, create reproducible examples when your data are too big or confidential to share, enhance your understanding of statistical concepts, and create demo data for teaching and tutorials. This workshop will cover the basics of simulation. We will simulate data with factorial designs by specifying the within and between-subjects factor structure, each cell mean and standard deviation, and correlations between cells where appropriate. This can be used to create simulated data sets to be used in preparing the analysis code for pre-registrations or registered reports. We will also create data sets for simulation-based power analyses. 
:::

# Why Simulate Data?

## Pre-Registration

![Prep analysis scripts for pre-registration](images/lego-registered-reports.png)

## Power

![Calculate power and sensitivity for analyses that don't have empirical methods](images/power.jpg)

## Reproducible Examples

![Create reproducible examples when your data are too big or confidential to share](images/big-data.png)

<!-- Pete Linforth/ Pixabay -->

## Enhance Understanding

![Enhance your understanding of statistical concepts](images/stats.jpg)

<!-- Stanford Online -->

## Teaching Data

![Create demo data for teaching and tutorials](images/teaching-stats.jpg)

# Faux

[![](images/faux.png)](https://rstudio-connect.psy.gla.ac.uk/faux/)

Web App: [rstudio-connect.psy.gla.ac.uk/faux/](https://rstudio-connect.psy.gla.ac.uk/faux/)

## Plot

![](images/faux_plot.png)

## Data

![](images/faux_data.png)

## Code

![](images/faux_code.png)



# Further Resources

:::{layout-nrow=1}

[![PsyPag Simulation Summer School](images/simsummerschool.jpg)](https://simsummerschool.github.io/)

[![Data Simulation Workshops](images/dsw.png)](https://debruine.github.io/data-sim-workshops/)

:::

# Exercises

* [Faux.jl](https://debruine.github.io/Faux.jl) (under development!)
* [tutorial](https://debruine.github.io/Faux.jl/dev/tutorial/)

``` julia
] add https://github.com/debruine/Faux.jl
```





