Statistical Design of Experiments
Statistical Design of Experiments
S/N Ratio Concept
S/N Ratio Concept
n
n
y Around Mea
y Around Mea
Variabilit
Variabilit
an
an
Effect of Me
Effect of Me
N
N
S
S
S/N Ratio Calculation
Note: For x
dB gain in S/N,
initial
x
opt
Range
RANGE
*
2
1
6
.
n
y
y
y
y
n
...
2
1
n
1
1
2
2
n
y
y
V
i
i
e
(dB
)
(
)
(
)
÷
÷
ø
ö
ç
ç
è
æ
=
ú
û
ù
ê
ë
é
-V
=
=
2
2
2
log
*
10
log
*
10
s
h
y
V
n
y
n
N
S
e
e
For n data: y
For n data: y
1
1
y
y
2
2
y
y
3
3
…y
…y
y
n
n
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