38
CHAPTER
2
Manual
Operations
• Statistics Output
Statistics can be obtained by STAT LIST, STAT LIST
1,
STAT LIST 2, EOX
and EOY commands. This computer allows. the calculation
of
the following
statistics:
Statistics Formula
n
Number
of
statistical
data
processed
n
LX
Sum
of
x
data
LX
Ly
Sum
of
y
data
Ly
LX
t 2
Sum
of
squares
of
x
data
LX
2
LY
t 2
Sum
of
squares
of
y
data
Ly2
LXY
Sum
of
products
of
x
andy
data
LXY
Lx/n
Mean
of
x
data
LX
--
n
Ly/n
Mean
of
y
data
LY
n
xan-1
Sample standard deviation
of
x data
JnLx
2
-
(Lx)
2
n(n-1)
yan-1
Sample standard deviation
of
y
data
JnLY
2
-(Ly)
2
n(n
-
1)
X<T
n
Population standard deviation
of
x
data
JnLx
2
-(Lx)
2
n2
y<Tn
Population standard deviation
of
y
data
JnLY
2
-
(Ly)
2
n 2
Linear regression
constant
term
LY-b.
LX
a
n
b
Linear regression coefficient
nLxY-Lx
·LY
nLx
2
-(
LxF
nZ.xy-z,x.
z,y
r
Correlation coefficient
/
1nz.
x
2
-
(Z,x)
'I
ln'Z.Y
2
-
(Z.Y)
2
1
EOX
Es
timated
x value for a given y value
EOX(Y)
=~
b
EOY
Estimated y value for a given x value
EOY<x)
=a+x·b
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