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Mathematical functions

Index numbers

Percent-change contributions

Utilities

quartile_method() resistant_fences() robust_z() fixed_cutoff() tukey_algorithm() hb_transform()
Outlier detection for price relatives
back_period() base_period()
Offset a vector prices or quantities
quantity_index()
Quantity index operator
grouped()
Grouped operator
balanced()
Balanced operator

Data

price_data price6 quantity6
Sample price/quantity data