HP SmartCalc 300s - Manual (Page 16)

Statistical Calculatian (STAT)
All calculations in this section are performed in the
STAT Mode (
MODEir2l )■_______________________________________
Selecting a Statistical Calculation Type
In the STAT Mode, display the statistical calculation
type selection screen.
Statistical Calculation Types
Key Menu item
№
l-VAR
A+BX
_+CX2
InX
e"X
A* B"X
A - X B
^iTx
Statistical Calculation
Single-variable
Linear regression
Quadratic regression
Logarithmic regression
e exponential regression
ob exponential regression
Power regression
Inverse regression
inputting Sample Data
Displaying the STAT Editor Screen
The STAT editor screen appears after you enter the
STAT Mode from another mode. Use the STAT menu
to select a statistical calculation type. To display the
STAT editor screen from another STAT Mode screen,
press
rsHiFrim (STAT) [D (Data).
STAT Editor Screen
There are two STAT editor screen formats,
depending on the type of statistical calculatian yau
selected.
Single-variable Statisiics Paired-variable Statistics
The fist line of the STAT editor screen shows the
value for the first sample or the values for their first
pair of samples.
------------------------------------------- 43-----------------------------------------
FREQ (Frequency) Coiumn
If you turn on the Statistical Display item an the
calculator's setup screen, a column labeled "FREQ"
will also be included on the STAT editor screen.
You can use FREQ column to specify the frequency
(the number of times the same sample appears in the
group of data) af each sample value.
Rules for Inputting Sample Data on the STAT
Editor Screen
Data you input is inserted into the cell where the
cursor is located. Use the cursor keys to move the
cursor between cells.
1
2
3
TAT Y Q
Cursor
The values and expressions you can input on the
STAT editor screen are the same as those you can
input in the COMP Mode with Linear format.
Pressing [A^ while inputting data clears your
current input.
After inputting a value, press 0
. This registers the
value and displays up to six of its digits in the
currently selected cell.
Example: To input the value 123.45 in cell X1
(Move the cursor to cellX 1)
[lHaioais]
The value you input appears—
in the formula area.
^TAT
Y B
1
2
3
123.45
^TA, Y IÏI
1 123.45
V
3
Registering a value causes the cursor to move down one cell.
I STAT Editor Screen Input Precautions
The number of lines in STAT editor screen (the
number of sample data values yau can input)
depends an the type of statistical data yau selected,
and on the Statistical Display setting of the
calculator's setup screen.
------------------------------------------- 44---------------------------------------------
Statistical -
Çjspaly
Statistic Type''"-'--...^ (No FREQ column)
Single-variable 80 lines
Paried-variable 40 lines
ON
(FREQ column)
40 lines
26 lines
• The following types of input are not allowed on the
STAT editor screen.
. m isHiFriM(M-) operations
• Assignment to variables (STO)
Precautions Concerning Sample Data
Storage
Sample data you input is deleted automatically
whenever you change to another mode from the
STAT Mode or change the Statistical Display setting
(which causes the FREQ column to be shown or
hidden ) on the calculator's setup screen.
Editing Sample Data
Replacing the Data In a Cell
(1) On the STAT editor screen, move the cursor to thei
cell you want to edit.
(2) lnput the new data value or expression, and then
press 0 .
Important!
• Note that you must totally replace the existing data
of the cell with new input. You cannot edit parts of
the existing data.
Deleting a line
(1) On the STAT editor screen, move the cursor to the
line you want to delete.
(2) Press[M3 .
inserting a Line
(1) On the STAT editor screen, move the cursor to the
line that will be under the line yau will insert.
(2) Press SEED CD (STAT) [U (Edit).
(3) Press CD (Ins).
Important!
• Note that the insert operatian will not work if the
maximum number of lines allowed for the STAT
editor screen are already used.