영문교정전문업체들은 어떻게 교정하는 지 살짝 엿보았습니다.
The
sampling method
I
use
d
on
in
this stu
d
y was
fair
unbiased
,
[Note: See Editor
’
s Note #
1
.]
but there are a few
aspects of
things I would
improve
the
way of
sampling
that
could be improved
. First
of all
,
I used
the systematic sampling method
was used to sample
from
only one particular type of
a
share,
“I
i
nvestment
T
t
rusts.
It
This
caused
a
data bias, because
I actually chose
only
companies
from
offering
this
one type of share
were chosen
. At the
beginning
outset,
, I said
it was stated
that
I
the
purpose
of this
investigated
investigation
was to determine
[Note: Please check the change.]
whether
a
high
–
price
d
of
share
s
make
s
more profit
s
than
a
low
–
price
d
of
one
s
.
I
This implied
meant
that the share
s
studied would
is
not only
be
“I
i
nvestment
T
t
rust
s
”
share
s
but also other types of shares.
However
I investigated
,
only
“I
i
nvestment
T
t
rust
s
”
shares
were
as a
sample
d
.
This
is
was
a critical error.
To
solve this problem,
I could use
the
S
s
tratified
S
s
ampling method
could be used
to collect sample data.
However, in this case
,
it would be necessary
I have
to know the
total
number of
all
companies
on
listed in
the newspaper
just
by
simply
counting from
the
top to
the
bottom of the list (there would be
more than
1
,
000 companies).
If
I could do
this
could be done
, the
S
s
tratified
S
s
ampling method would provide
me with
a much
fairer
better
opportunity of
getting
obtaining
a sample of data from
all
different types of
a
share
s
than the
s
S
ystematic
s
S
ampling method did.
Second
ly
,
I could choose
more than 54 sets of data
could be taken
as a sample.
The
more
the
sets of data
were
used, the more accurate
would be the obtained
result
s
I could get
.
출처:
http://www.editage.com/kr
(게재허락받음)