– E-24 –
STATISTICAL CALCULATIONS
Press
m1
to select the statistics mode. The seven sta-
tistical calculations listed below can be performed. After select-
ing the statistics mode, select the desired sub-mode by press-
ing the number key corresponding to your choice.
To change statistical sub-mode, reselect statistics mode (press
m1
), then select the required sub-mode.
0
(SD)
: Single-variable statistics
1
(LINE)
: Linear regression calculation
2
(QUAD) : Quadratic regression calculation
3
(EXP)
: Exponential regression calculation
4
(LOG)
: Logarithmic regression calculation
5
(PWR)
: Power regression calculation
6
(INV)
: Inverse regression calculation
The following statistics can be obtained for each statistical cal-
culation (refer to the table on the next page):
Single-variable statistical calculation
Statistics of
Q
and value of the normal probability function
Linear regression calculation
Statistics of
Q
and
W
and, in addition, estimate of
y
for a given
x
(estimate
y
´
) and estimate of
x
for a given
y
(estimate
x
´
)
Exponential regression, Logarithmic regression,
Power regression, and Inverse regression calculation
Statistics of
Q
and
W
. In addition, estimate of
y
for a given
x
and estimate of
x
for a given
y
. (Since the calculator converts
each formula into a linear regression formula before actual
calculation takes place, it obtains all statistics, except coeffi-
cients
a
and
b
, from converted data rather than entered data.)
Quadratic regression calculation
Statistics of
Q
and
W
and coefficients
a
,
b
,
c
in the quadratic
regression formula (
y
=
a
+
bx
+
cx
2
). (For quadratic regres-
sion calculations, no correlation coefficient (
r
) can be ob-
tained.) When there are two
x
´
values, press
@≠
.
When performing calculations using
a
,
b
and
c
, only one nu-
meric value can be held.
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