REGR_R2 Function Example | Teradata Vantage - 17.10 - Example: Returning the Coefficient of Determination for Height and Weight - Advanced SQL Engine - Teradata Database

This example is based the following regrtbl data. Nulls are indicated by the QUESTION MARK character.

c1   height   weight
--   ------   ------
 1       60       84
 2       62       95
 3       64      140
 4       66      155
 5       68      119
 6       70      175
 7       72      145
 8       74      197
 9       76      150
10       76      ?
11       ?       150
12       ?       ?

The following SELECT statement returns the coefficient of determination for height and weight where neither height nor weight is null.

   SELECT CAST(REGR_R2(weight,height) AS DECIMAL(4,2)) 
   FROM regrtbl;
   
   REGR_R2(weight,height)
   ----------------------
                      .58