Statistical Calculations And Variables - Sharp EL-738 Operation Manual

Editing statistical data
Change the previously entered data from page 65 as follows:
Procedure
Display the statistical
data.
Change the "40, 2" data
set to "45, 3".
Delete "50".
Add "60".

Statistical Calculations and Variables

The following results can be obtained for each statistical calcula-
tion (refer to the table below):
Single-variable statistical calculations
Section results only.
Linear regression calculations
Section and
The estimate of y for a given x (estimate y ´) and the estimate of
x for a given y (estimate x ´) can also be found.
Quadratic regression calculation
Section and
dratic regression formula ( y = a + bx + cx
sion calculations, no correlation coeffi cient r can be obtained.
67
DATA
30
40
40
50
Key operation
i
i i 45 J
i 3 J
i . ?
60 J
results, except for coeffi cients c .
results, and coeffi cients a , b , and c in the qua-
DATA
30
45
45
45
60
Display
X1=
FRQ2=
Stat —
DATA SET=
2
). In quadratic regres-
3000
300
000
300