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Quadratic regression calculation
Statistics of ① and ②, and coeffi cients
the quadratic regression formula (
(For quadratic regression calculations, no correlation
r
coeffi cient (
values, each value will be displayed with "1:" or "2:", and
stored separately in the X and Y memories.
Euler exponential regression, logarithmic
regression, power regression, inverse regression,
and general exponential regression calculations
Statistics of ① and ②. In addition, the estimate of
x
a given
and the estimate of
calculator converts each formula into a linear regression
formula before actual calculation takes place, it obtains all
statistics, except coeffi cients
rather than entered data.)
x –
sx
σx
①
n
Σx
Σx
2
y –
sy
σy
Σy
Σy
2
②
Σx y
r
a
b
c
• Use ; and t to perform a variable calculation
in STAT mode.
• U does not function in STAT mode.
) can be obtained.) When there are two
Mean of samples (x data)
Sample standard deviation (x data)
Population standard deviation (x data)
Number of samples
Sum of samples (x data)
Sum of squares of samples (x data)
Mean of samples (y data)
Sample standard deviation (y data)
Population standard deviation (y data)
Sum of samples (y data)
Sum of squares of samples (y data)
Sum of products of samples (x, y )
Correlation coeffi cient
Coeffi cient of regression equation
Coeffi cient of regression equation
Coeffi cient of quadratic regression equation
a
y =
a
x
for a given
a
b
and
, from converted data
b
c
,
,
in
+ b
+
x
cx
2
).
y
for
y
. (Since the
E-42
x
´
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