3
•
Exponential Repression ...
MSE
=
!
1
n
–
2
i
=1
n
(
ln
y
i
–
(
ln
a
+
bx
i
))
2
•
Power Regression ...
MSE
=
!
1
n
–
2
i
=1
n
(
ln
y
i
–
(
ln
a
+
b
ln
x
i
))
2
•
Sin Regression ...
MSE
=
!
1
n
–
2
i
=1
n
(
y
i
–
(
a
sin
(
bx
i
+
c
)
+
d
))
2
•
Logistic Regression ...
MSE
=
!
1
n
–
2
1
+
ae
-bx
i
C
i
=1
n
y
i
–
2
u
u
u
u
u
Estimated Value Calculation for Regression Graphs
STAT2 adds a Y-CAL function that uses regression to calculate the estimated y-value for a
particular x-value after a paired-variable statistic regression graph is drawn.
The following is the general procedure for using the Y-CAL function.
1. After drawing a regression graph, press
62
(Y-CAL) to enter the graph selection mode,
and then press
w
.
If there are multiple graphs on the display, use
f
and
c
to select the graph you want, and
then press
w
.
•
This causes an x-value input dialog box to appear.
2. Input the value you want for x and then press
w
.
•
This causes the coordinates for x and y to appear at the bottom of the display, and moves
the pointer to the corresponding point on the graph.
3. Pressing
v
or a number key at this time causes the x-value input dialog box to reappear
so you can perform another estimated value calculation if you want.
4. After you are finished, press
i
to clear the coordinate values and the pointer from the
display.
·
The pointer does not appear if the calculated coordinates are not within the display range.
Содержание STAT 2
Страница 30: ...30 u u u u uInput Example u u u u uResults...
Страница 56: ...56 Calculation Result Output Example p F distribution probability...
Страница 64: ...Examples...
