Contest submissions: submit [here][1]. For this contest, you will be using this dataset: https://osf.io/jfdtk/ The data set is from this publication: https://cdn.ymaws.com/www.psichi.org/resource/resmgr/journal_2019/24_2_crambletalvarez.pdf A codebook can be found here: https://osf.io/bkd5m/ You can complete and submit R script for any of the four levels, but higher levels require the completion of lower levels (in other words, if you want to turn in Level 3 script, you'll need to also do levels 1 and 2). Level 1: Remove participants with missing responses for the variable "Age." Level 2: Provide frequencies of three different age groups: How many people are Less than or equal to 20? How many people between 21-40? How many people are Greater than 40? Level 3: Create 4 graphs to visualize recognition of any 4 psychologists by age of participant. Level 4: Run a simple linear regression analysis to determine if you can predict recognition of male psychologists from participant age. For tips on getting started with R, start here: http://bit.ly/psichirtutorial [1]: https://docs.google.com/forms/d/e/1FAIpQLSfYOExIf6TUJ0PngonOcg72X5u_MorRCo0XpM2HeCuXjA51sg/viewform