Assignment: Your task is to use Rmarkdown to write a short report, readable by a technically literate person. The code you used should not be visible in the final report (unless you have a good reason to show it).
Due: Submit your work via Canvas by the end of the day (midnight) on Thursday, October 31st. Please submit both the Rmd file and the resulting html or pdf file. You can work with other members of class, but I expect each of you to construct and run all of the scripts yourself.
Researchers are studying how levels of the hormone IGF-1 (insulin-like growth factor 1) affect early growth, and have measured IGF-1 levels along with length, weight, sex, and an index of maturity in 655 young capybara (although there is a certain amount of missing data due to capybara exuberance). Your goal in this report is to investigate how each of length, weight, and IGF-1 level are each related to sex and maturity, addressing the questions (a) how much does length increase with maturity, and (b) is there a difference in mean length between sexes, at the same maturity level, and (c) the same questions for weight and IGF-1 level. Be sure to describe the data, and communicate both estimates of effects in real units and the strength of statistical support for your results.
The dataset is here: igf.tsv, and has variables age (in weeks), sex, igf (IGF-1 levels), maturity (1-5, larger values are more sexually mature), weight (in g), and length (body and tail, in cm).