Note
: For this function, it is possible to use the X variable. The entered values
of the start, end and procedure should not exceed the number of 30 values of X.
Statistical calculations – STAT mode
Statistical calculations are used in the STAT mode, press
[MODE/SET UP][2]
.
After you enter the statistical mode, there are 8 types of calculations to choose
from:
Statistics of one variable
1: 1-VAR
Statistics of one variable.
Statistics of two variables
2: A+BX
Linear regression
Y = A + BX
3: _+CX
2
Quadratic regression
Y = A + BX + CX
2
4: ln X
Logarithmic regression
Y = A + B lnX
5:
e
^X
Exponential regression
Y = A • e
BX
6: A•B^X
Exponential regression
Y = A • B
X
7: A•X^B
Power regression
Y = A • X
B
8: 1/X
Inversion regression
Y = A + B / X
Inserting data for statistical analysis
Before entering data, press
[2ND][MODE/SET UP][▼][3]
to switch on/off
the frequency table. The table enables you to enter numbers of repetitions for
every value.
In the STAT menu, select a calculation type. Data may be entered in two
formats (1-VAR or 2-VAR) that depend on the selection.
1. Enter the value of X and press
[=]
.
2. Enter frequency (FREQ) of the occurrence of the value X (for the 1-VAR
mode) or corresponding value Y (for mode 2-VAR) and press
[=]
.
3. To enter additional data, proceed according to step 3.
4. To end the data editor and display the results, press
[AC]
and then
[2ND]
[⌐STAT¬]
to display the ⌐STAT¬ menu.
Analysis of inserted data
After data are entered, there is a range of statistical functions to choose from by
pressing
[2ND][⌐STAT¬]
:
1: Type
Menu of statistical calculations, all 8 types mentioned above
are possible (STAT).
2: Data
Data editor screen.
3: Sum
Summation submenu.
4: Var
Submenu of statistical variables.
5: Reg
Regression submenu.
6: MinMax
Submenu of minimums/maximums.
3: Edit
Submenu of command editing:
[Ins]
,
[Del-A]
.
To view or change the data, choose one of the options 1 to 3. Options 4 to 6
serve for the selection of required variables of data analyses. Values of sta-
tistical variables depend on inserted data.
Attention!
The choice number may
8–EN
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