moderndive 0.3.0.9000

moderndive 0.3.0

Added minimally viable "parallel slopes" regression model plotting function gg_parallel_slopes(). In the future we hope to define a new ggplot2 geom.
Added "Why moderndive?" vignette
Added ID argument to get_regression_points() to return a column that identifies the observational units/rows
Datasets: + Added DD_vs_SB: Dunkin Donuts and Starbucks in Eastern Massachusetts data collected by @DelaneyMoran + Added promotions: tibble version of openintro::gender.discrimination used to illustrate permutation test. + Added MA_schools: Relationship between SAT scores and socio-economic status for Massachusetts high schools. + Added mythbusters_yawn: Data from study on Mythbusters show on whether yawning is + Added promotions_shuffled: one instance of promotions with gender permuted/shuffled + Original pennies_sample sample of 40 pennies from pennies has been renamed orig_pennies_sample. New pennies_sample consists of 50 pennies sampled from bank in Northampton, MA, USA on 2019/2/1. + Added pennies_resamples: 35 bootstrap resamples of new pennies_sample + Added movies_genre: random sample of 32 action and 36 romance movies from ggplot2movies::movies
Removed all assertive::assert() code
Converted house_prices$date from dttm (date-time) to date per R4DS comment on using simplest data type possible

Updated package for:

Use in DataCamp's Modeling with Data in the Tidyverse, in particular added evals and house_prices datasets and updated get_regression_table() and get_regression_points() functions.
v0.4.0 of ModernDive textbook

Details:

Created get_correlation() function to omit $ syntax and return a data frame
Import infer::rep_sample_n() instead of our own defined version, as this function is now included in infer
Added evals, house_prices, tactile_prop_red, pennies_sample and mythbusters_yawn datasets
Added mean squared error and root mean squared error to output of get_regression_summaries()
Added newdata argument to get_regression_points(). When:
- Original outcome variable is included in newdata, output it as well as residual (See Issue 17).
- Otherwise omit residual
Removed tidyverse from Depends, Imports, or Suggests

Fixed broken url in ?bowl_samples

Added three get_regression_* functions meant for novice R users/regression fitters that process regression model outputs
Added datasets:
- pennies: 800 pennies to be treated as a population from which to simulate sampling a numerical variable from (year of minting)
- bowl: Bowl of 2400 balls of which 900 are red to be treated as a population from which to simulate sampling a categorical variable from (color). Also known as the urn sampling framework \url{https://en.wikipedia.org/wiki/Urn_problem}.
- bowl_samples: data from tactile version of sampling from bowl done in class: 10 groups sampled n=50 balls from and counted the number red [ADD MODERNDIVE LINK]