<s>
Error	B-Application
bars	I-Application
are	O
graphical	O
representations	O
of	O
the	O
variability	O
of	O
data	O
and	O
used	O
on	O
graphs	O
to	O
indicate	O
the	O
error	O
or	O
uncertainty	O
in	O
a	O
reported	O
measurement	O
.	O
</s>
<s>
Error	B-Application
bars	I-Application
often	O
represent	O
one	O
standard	B-General_Concept
deviation	I-General_Concept
of	O
uncertainty	O
,	O
one	O
standard	B-General_Concept
error	I-General_Concept
,	O
or	O
a	O
particular	O
confidence	O
interval	O
(	O
e.g.	O
,	O
a	O
95%	O
interval	O
)	O
.	O
</s>
<s>
Error	B-Application
bars	I-Application
can	O
be	O
used	O
to	O
compare	O
visually	O
two	O
quantities	O
if	O
various	O
other	O
conditions	O
hold	O
.	O
</s>
<s>
This	O
can	O
determine	O
whether	O
differences	O
are	O
statistically	B-General_Concept
significant	I-General_Concept
.	O
</s>
<s>
Error	B-Application
bars	I-Application
can	O
also	O
suggest	O
goodness	O
of	O
fit	O
of	O
a	O
given	O
function	O
,	O
i.e.	O
,	O
how	O
well	O
the	O
function	O
describes	O
the	O
data	O
.	O
</s>
<s>
Scientific	O
papers	O
in	O
the	O
experimental	O
sciences	O
are	O
expected	O
to	O
include	O
error	B-Application
bars	I-Application
on	O
all	O
graphs	O
,	O
though	O
the	O
practice	O
differs	O
somewhat	O
between	O
sciences	O
,	O
and	O
each	O
journal	O
will	O
have	O
its	O
own	O
house	O
style	O
.	O
</s>
<s>
It	O
has	O
also	O
been	O
shown	O
that	O
error	B-Application
bars	I-Application
can	O
be	O
used	O
as	O
a	O
direct	O
manipulation	O
interface	O
for	O
controlling	O
probabilistic	O
algorithms	O
for	O
approximate	O
computation	O
.	O
</s>
<s>
Error	B-Application
bars	I-Application
can	O
also	O
be	O
expressed	O
in	O
a	O
plus	O
–	O
minus	O
sign	O
( ±	O
)	O
,	O
plus	O
the	O
upper	O
limit	O
of	O
the	O
error	O
and	O
minus	O
the	O
lower	O
limit	O
of	O
the	O
error	O
.	O
</s>
<s>
A	O
notorious	O
misconception	O
in	O
elementary	O
statistics	O
is	O
that	O
error	B-Application
bars	I-Application
show	O
whether	O
a	O
statistically	B-General_Concept
significant	I-General_Concept
difference	O
exists	O
,	O
by	O
checking	O
simply	O
for	O
whether	O
the	O
error	B-Application
bars	I-Application
overlap	O
;	O
this	O
is	O
not	O
the	O
case	O
.	O
</s>
