Data Preprocessing

Functions to process and manipulate data for analysis

reformat_data()

Reformats data for analysis by changing column names and filtering out non-arm's length sales.

example_data

Example assessment and sale data

Regressivity Tests

Functions to analyze processed data for regressivity

calc_iaao_stats()

Evaluates the accuracy of assessments.

regression_tests()

Offers various tests for regressivity. See https://erhla.github.io/cmfproperty/Methods for more info.

Visualizing Results

Functions which produce graphs of regressivity for analysis

iaao_graphs()

Produces graphs of IAAO standards over time

monte_carlo_graphs()

Conducts a monte carlo simulation, which approximates the impacts of random factors in regressivity statistics

diagnostic_plots()

Produces plots and tables helpful for data diagnostics

binned_scatter()

Produces a key visualization of assessment regressivity, the binned scatter plot

pct_over_under()

Produces a key visualization of assessment regressivity, the percent over-under plot

make_report()

Produces an HTML report in the current working directory to evaluate regressivity in the supplied jurisdiction