[MATH-1007] Add mode function to StatUtils class

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.3
• Assignee: Unassigned
• Reporter: Sebb
• Created: 15/Jul/13 17:05
• Updated: 19/May/14 15:13
• Resolved: 18/Jul/13 15:02

Description

It might be useful to have a StatUtils function to get the mode.

However, this may be tricky as it does not easily fit in with the current StatUtils design.

The mode can have multiple elements, but all the other methods only return a single value.

There are at least two options for converting an array to a single value:

• arbitrarily (or randomly) pick one
• throw an Exception if there is more than one mode

Or maybe StatUtils should return a double array.

StatUtils also uses nested classes for all but the difference and normalize methods. However the standard interfaces and classes don't support returning arrays.

Issue Links

• is related to: MATH-1000 Add mode function to Frequency class