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HP HP-11C

HP HP-11C
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Section
10:
Applications
Programs
163
The
coefficient
of
determination
is:
AXY,
+b3X,Y;—
—1—(2Yi)2
2
_
n
r
3(Y?)
-
1
(2Y))?
n
The
type
of
curve
fit
to
be
run
is
determined
before
data
input
begins
by
inputting
the
code
number.
The
coefficient
of
determination
indicates
the
quality
of
fit
achieved
by
the
regression.
Values
of
r?
close
to
1.00
indicate
a
better
fit
than
values
close
to
zero.
The
regression
coefficients
a
and
b
define
the
curve
generated,
according
to
the
equations
at
the
beginning
of
this
discussion.
Exponential
Curve
Fit
Logarithmic
Curve
Fit
Code
=1
Code
=2
y
y
y:aebx
y=a-+blinx
]
X
/
X

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