<s>
In	O
statistical	O
hypothesis	O
testing	O
,	O
a	O
turning	B-General_Concept
point	I-General_Concept
test	I-General_Concept
is	O
a	O
statistical	O
test	O
of	O
the	O
independence	O
of	O
a	O
series	O
of	O
random	O
variables	O
.	O
</s>
