Distinct value

As explained in Statistics Slam Dunk

The unique() function in R returns the distinct elements, rows, or combinations of values in an object.

NBAboxscores <- unique(NBAboxscores)
dim(NBAboxscores) 
## [1] 14758   117

How Statistics Slam Dunk covers it

How deep it goes

Explains why rows duplicate, applies unique(), and verifies dimensions, but does not detail the function’s internal algorithm.

Examples

Uses NBAboxscores records duplicated by officials and checks reduction from 44,284 rows to 14,758.

What it assumes

Assumes familiarity with an R data frame and teaches duplicate removal through a concrete NBA dataset.

What you can do after

Apply unique() to remove duplicate records and verify the cleaned data’s dimensions with dim().

How it connects

Connects distinct rows with select(), dim(), count(), filter(), and data wrangling.

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Also explained in

• 

  liveBookmanning.com
  Starting Data Analytics with Generative AI and PythonA unique value is a distinct value occurring in a field or variable, counted once regardless of its frequency.
• 

  liveBookmanning.com
  The Well-Grounded Rubyist, Fourth Editionuniq is a Ruby Array method that returns a new array with duplicate elements removed according to equality comparison.

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Related concepts

• setaddressed by · A set is a collection of unique elements in which membership is determined by whether an element is present, not by duplicate occurrences.
• data frameused by · A data frame is a two-dimensional tabular data structure with labeled rows and columns that can contain values of different types.
• NumPyused by · NumPy is an open-source Python library for numerical computing that provides multidimensional arrays and operations on them.
• scopeconfigured by · Scope is a defined boundary specifying which entities, activities, resources, or conditions are included or governed in a particular context.
• comprehensionproduced by · A comprehension is a language construct that creates a collection by iterating over one or more sources, optionally filtering elements and transforming them.
• dropdownused by · A dropdown is a user-interface control that presents a set of choices for user selection, often revealing them when activated.

This explainer was generated by Manning's knowledge graph from the text of Statistics Slam Dunk. The section links point to the parts of the book it draws on.