Treatment

Design coordinate

Groups^{a}

Mean Y
_{p/x} value


3

−++−+−−

A
 
509.10

4

−+−+−+−

A

B

365.12

2

+++++++

A

B

338.53

6

+−−++−−
 
B

289.09

7

++−−−−+
 
B

286.24

5

−−−−+++
 
B

281.88

8

0000000
 
B

273.78

1

−−++−−+
 
B

237.16

9

+−+−−+−
 
B

229.23


^{a}Treatments with the same groups are not significantly different among themselves