For between sum of squares (SS): STATS_ONE_WAY_ANOVA(expr1, expr2,'SUM_SQUARES_BETWEEN') : STATS_ONE_WAY_ANOVA « Linear Regression Functions « Oracle PL/SQL Tutorial






STATS_ONE_WAY_ANOVA tests the equality of several means.

The test statistics is based on F statistic.

SQL> -- create demo table
SQL> create table myTable(
  2    id           NUMBER(2),
  3    value        NUMBER(6,2)
  4  )
  5  /

Table created.

SQL>
SQL> -- prepare data
SQL> insert into myTable(ID,  value)values (1,9);

1 row created.

SQL> insert into myTable(ID,  value)values (2,2.11);

1 row created.

SQL> insert into myTable(ID,  value)values (3,3.44);

1 row created.

SQL> insert into myTable(ID,  value)values (4,-4.21);

1 row created.

SQL> insert into myTable(ID,  value)values (5,10);

1 row created.

SQL> insert into myTable(ID,  value)values (6,3);

1 row created.

SQL> insert into myTable(ID,  value)values (7,-5.88);

1 row created.

SQL> insert into myTable(ID,  value)values (8,123.45);

1 row created.

SQL> insert into myTable(ID,  value)values (9,98.23);

1 row created.

SQL> insert into myTable(ID,  value)values (10,938.23);

1 row created.

SQL> insert into myTable(ID,  value)values (11,984.23);

1 row created.

SQL> insert into myTable(ID,  value)values (12,198.23);

1 row created.

SQL> insert into myTable(ID,  value)values (13,928.87);

1 row created.

SQL> insert into myTable(ID,  value)values (14,25.37);

1 row created.

SQL> insert into myTable(ID,  value)values (15,918.3);

1 row created.

SQL> insert into myTable(ID,  value)values (16,9.23);

1 row created.

SQL> insert into myTable(ID,  value)values (17,8.23);

1 row created.

SQL>
SQL> select * from myTable
  2  /

        ID      VALUE
---------- ----------
         1          9
         2       2.11
         3       3.44
         4      -4.21
         5         10
         6          3
         7      -5.88
         8     123.45
         9      98.23
        10     938.23
        11     984.23

        ID      VALUE
---------- ----------
        12     198.23
        13     928.87
        14      25.37
        15      918.3
        16       9.23
        17       8.23

17 rows selected.

SQL>
SQL>
SQL> SELECT STATS_ONE_WAY_ANOVA(id, value, 'SUM_SQUARES_BETWEEN') FROM myTable;

STATS_ONE_WAY_ANOVA(ID,VALUE,'SUM_SQUARES_BETWEEN')
---------------------------------------------------
                                         2557882.91

SQL>
SQL>
SQL>
SQL> -- clean the table
SQL> drop table myTable
  2  /

Table dropped.








20.15.STATS_ONE_WAY_ANOVA
20.15.1.For between sum of squares (SS): STATS_ONE_WAY_ANOVA(expr1, expr2,'SUM_SQUARES_BETWEEN')
20.15.2.For within sum of squares (SS): STATS_ONE_WAY_ANOVA(expr1, expr2, 'SUM_SQUARES_WITHIN')
20.15.3.For between degrees of freedom (DF): STATS_ONE_WAY_ANOVA(expr1, expr2, 'DF_BETWEEN')
20.15.4.For within degrees of freedom (DF): STATS_ONE_WAY_ANOVA(expr1, expr2, 'DF_WITHIN')
20.15.5.For mean square (MS) between: STATS_ONE_WAY_ANOVA(expr1, expr2, 'MEAN_SQUARES_BETWEEN')
20.15.6.For mean square (MS) within: STATS_ONE_WAY_ANOVA(expr1, expr2, 'SUM_SQUARES_WITHIN')
20.15.7.For F statistic: STATS_ONE_WAY_ANOVA(expr1, expr2, 'F_RATIO')
20.15.8.For significance level: STATS_ONE_WAY_ANOVA(expr1, expr2, 'SIG')