Project MOSAIC

Project MOSAIC is a community of educators working to develop a new way to introduce mathematics, statistics, computation and modeling to students in colleges and universities.

From 2009 to 2016, Project MOSAIC was supported by a grant from the US National Science Foundation (NSF DUE-0920350). The core resource developed during that time continue to be maintained and expanded.

Among those resources are:

The {mosaic} package for R which supports teaching stats using a expressive, compact, and consistent formula syntax. This minimizes start up costs for students and enables students to calculate descriptive statistics, create statistical graphics, and construct statistical graphics. {mosaic} is one of three main syntaxes for teaching and doing statistics using R. (For a comparison, see Prof. Amelia McNamara’s video presentation.)

Hundreds of instructors have found {mosaic} in teaching introductory statistics. Examples:
```
Stats <- df_stats(births ~ wday, data = Births2015, 
                center=mean, conf=ci.mean(0.95))
Stats
```

  response wday    center conf_lower conf_upper
1   births  Sun  7397.808   7319.233   7476.383
2   births  Mon 11739.385  11490.746  11988.023
3   births  Tue 12585.808  12461.750  12709.866
4   births  Wed 12279.096  12140.249  12417.944
5   births  Thu 12083.434  11775.866  12391.001
6   births  Fri 11834.558  11550.568  12118.547
7   births  Sat  8357.096   8250.949   8463.243

gf_jitter(births ~ wday, data = Births2015) %>%
  gf_errorbar(conf_lower + conf_upper ~ wday, data = Stats, 
              color = ~ wday, inherit=FALSE)