Mann-Whitney U test

Parameter

Week

P^a

Gross Alpha

January 5

0.39

January 12

0.67

January 19

0.20

January 26

0.43

February 2

0.29

February 9

0.25

February 16

0.67

February 23

0.89

March 2

0.57

March 9

0.32

March 16

0.12

March 23

0.35

March 30

1.00

Gross Beta

January 5

0.39

January 12

0.20

January 19

0.06

January 26

0.89

February 2

0.46

February 9

0.89

February 16

0.03

February 23

0.25

March 2

0.01

March 9

0.06

March 16

0.48

March 23

0.07

March 30

0.15

a.     A 'p' value greater than 0.05 signifies no statistical difference between data groups.