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Oracle PL/SQL/Analytical Functions/STATS WSR TEST - История изменений
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в 13:45, 26 мая 2010
2010-05-26T13:45:19Z
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Admin: 1 версия
2010-05-26T09:56:11Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>==STATS_WSR_TEST(expr1, expr2, "ONE_SIDED_SIG"): For one-tailed significance level==<br />
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<br />
<br />
<!-- start source code --><br />
<br />
<source lang="sql"><br />
<br />
SQL><br />
SQL> create table TestTable (<br />
2 x number primary key,<br />
3 y number<br />
4 );<br />
Table created.<br />
SQL> insert into TestTable values (1, 7 );<br />
1 row created.<br />
SQL> insert into TestTable values (2, 1 );<br />
1 row created.<br />
SQL> insert into TestTable values (3, 2 );<br />
1 row created.<br />
SQL> insert into TestTable values (4, 5 );<br />
1 row created.<br />
SQL> insert into TestTable values (5, 7 );<br />
1 row created.<br />
SQL> insert into TestTable values (6, 34 );<br />
1 row created.<br />
SQL> insert into TestTable values (7, 32 );<br />
1 row created.<br />
SQL> insert into TestTable values (8, 43 );<br />
1 row created.<br />
SQL> insert into TestTable values (9, 87 );<br />
1 row created.<br />
SQL><br />
SQL> select * from TestTable;<br />
X Y<br />
---------- ----------<br />
1 7<br />
2 1<br />
3 2<br />
4 5<br />
5 7<br />
6 34<br />
7 32<br />
8 43<br />
9 87<br />
9 rows selected.<br />
SQL><br />
SQL> -- STATS_WSR_TEST(expr1, expr2, "ONE_SIDED_SIG"): For one-tailed significance level<br />
SQL><br />
SQL> -- STATS_WSR_TEST(expr1, expr2, "ONE_SIDED_SIG")<br />
SQL><br />
SQL><br />
SQL> SELECT STATS_WSR_TEST(y, x, "ONE_SIDED_SIG") FROM TestTable;<br />
STATS_WSR_TEST(Y,X,"ONE_SIDED_SIG")<br />
-----------------------------------<br />
.013923976<br />
SQL><br />
SQL> drop table TestTable;<br />
Table dropped.<br />
SQL><br />
SQL><br />
SQL><br />
<br />
</source><br />
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==STATS_WSR_TEST(expr1, expr2, "TWO_SIDED_SIG"): For two-tailed significance level==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="sql"><br />
<br />
SQL><br />
SQL><br />
SQL> create table TestTable (<br />
2 x number primary key,<br />
3 y number<br />
4 );<br />
Table created.<br />
SQL> insert into TestTable values (1, 7 );<br />
1 row created.<br />
SQL> insert into TestTable values (2, 1 );<br />
1 row created.<br />
SQL> insert into TestTable values (3, 2 );<br />
1 row created.<br />
SQL> insert into TestTable values (4, 5 );<br />
1 row created.<br />
SQL> insert into TestTable values (5, 7 );<br />
1 row created.<br />
SQL> insert into TestTable values (6, 34 );<br />
1 row created.<br />
SQL> insert into TestTable values (7, 32 );<br />
1 row created.<br />
SQL> insert into TestTable values (8, 43 );<br />
1 row created.<br />
SQL> insert into TestTable values (9, 87 );<br />
1 row created.<br />
SQL><br />
SQL> select * from TestTable;<br />
X Y<br />
---------- ----------<br />
1 7<br />
2 1<br />
3 2<br />
4 5<br />
5 7<br />
6 34<br />
7 32<br />
8 43<br />
9 87<br />
9 rows selected.<br />
SQL><br />
SQL> -- STATS_WSR_TEST(expr1, expr2, "TWO_SIDED_SIG"): For two-tailed significance level<br />
SQL><br />
SQL> -- STATS_WSR_TEST(expr1, expr2, "TWO_SIDED_SIG")<br />
SQL><br />
SQL><br />
SQL> SELECT STATS_WSR_TEST(y, x, "TWO_SIDED_SIG") FROM TestTable;<br />
STATS_WSR_TEST(Y,X,"TWO_SIDED_SIG")<br />
-----------------------------------<br />
.027847953<br />
SQL><br />
SQL> drop table TestTable;<br />
Table dropped.<br />
SQL><br />
SQL><br />
SQL><br />
<br />
</source><br />
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==STATS_WSR_TEST(y, x, "STATISTIC"): Wilcoxon Signed Ranks test tests whether medians of two populations are significantly different==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="sql"><br />
<br />
SQL><br />
SQL><br />
SQL> create table TestTable (<br />
2 x number primary key,<br />
3 y number<br />
4 );<br />
Table created.<br />
SQL> insert into TestTable values (1, 7 );<br />
1 row created.<br />
SQL> insert into TestTable values (2, 1 );<br />
1 row created.<br />
SQL> insert into TestTable values (3, 2 );<br />
1 row created.<br />
SQL> insert into TestTable values (4, 5 );<br />
1 row created.<br />
SQL> insert into TestTable values (5, 7 );<br />
1 row created.<br />
SQL> insert into TestTable values (6, 34 );<br />
1 row created.<br />
SQL> insert into TestTable values (7, 32 );<br />
1 row created.<br />
SQL> insert into TestTable values (8, 43 );<br />
1 row created.<br />
SQL> insert into TestTable values (9, 87 );<br />
1 row created.<br />
SQL><br />
SQL> select * from TestTable;<br />
X Y<br />
---------- ----------<br />
1 7<br />
2 1<br />
3 2<br />
4 5<br />
5 7<br />
6 34<br />
7 32<br />
8 43<br />
9 87<br />
9 rows selected.<br />
SQL><br />
SQL> --STATS_WSR_TEST(y, x, "STATISTIC"): Wilcoxon Signed Ranks test tests whether medians of two populations are significantly different.<br />
SQL><br />
SQL><br />
SQL> SELECT STATS_WSR_TEST(y, x, "STATISTIC") FROM TestTable;<br />
STATS_WSR_TEST(Y,X,"STATISTIC")<br />
-------------------------------<br />
-2.1994217<br />
SQL><br />
SQL> drop table TestTable;<br />
Table dropped.<br />
SQL><br />
SQL><br />
SQL><br />
<br />
</source></div>
Admin