Function reference • assessr

Functions
Coefficient of Dispersion (COD) COD is the average absolute percent deviation from the median ratio. It is a measure of horizontal equity in assessment. Horizontal equity means properties with a similar fair market value should be similarly assessed.
`cod()` `cod_ci()` `cod_met()`	Calculate Coefficient of Dispersion (COD)
Price-Related Differential (PRD) PRD is the mean ratio divided by the mean ratio weighted by sale price. It is a measure of vertical equity in assessment. Vertical equity means that properties at different levels of the income distribution should be similarly assessed.
`prd()` `prd_ci()` `prd_met()`	Calculate Price-Related Differential (PRD)
Price-Related Bias (PRB) PRB is an index of vertical equity that quantifies the relationship betweem ratios and assessed values as a percentage. In concrete terms, a PRB of 0.02 indicates that, on average, ratios increase by 2% whenever assessed values increase by 100 percent.
`prb()` `prb_ci()` `prb_met()`	Calculate Coefficient of Price-Related Bias (PRB)
(Modified) Kakwani Index (MKI) The Kakwani Index (KI) and the Modified Kakwani Index (MKI) are Gini-based measures to test for vertical equity. They work by comparing the cumulative distribution of assessed values to the distribution of sale prices.
`mki()` `ki()` `mki_met()`	Calculate Kakwani and Modified Kakwani Index
Other functions Functions for other assessment-related tasks
`boot_ci()`	Calculate bootstrapped confidence intervals
`detect_chasing()` `detect_chasing_cdf()` `detect_chasing_dist()`	Detect sales chasing in a vector of sales ratios
`is_outlier()` `quantile_outlier()` `iqr_outlier()`	Detect outlier values in a vector using IQR/quantile method
Data Sample data used for testing and demonstrations
`ratios_sample`	Sample of ratio and sales data pulled from CCAO records