Statistical Calculations (Sd/Reg) - Casio fx-3650P II User Manual

Statistical Calculations (SD/REG)

k
Statistical Calculation Sample Data
A Inputting Sample Data
You can input sample data either with statistical frequency turned on (FreqOn) or off
(FreqOff). The calculator's initial default setting is FreqOn. You can select the input
method you want to use with the setup screen statistical frequency setting (page 7).
A Maximum Number of Input Data Items
The maximum number of data items you can input depends on whether frequency is on
(FreqOn) or off (FreqOff).
SD Mode ......40 items (FreqOn), 80 items (FreqOff)
REG Mode ...26 items (FreqOn), 40 items (FreqOff)
A Sample Data Clear
All sample data currently in memory is cleared whenever you change to another calculation
mode and when you change the statistical frequency setting.
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Performing Single-variable Statistical Calculations
To perform the example operations in this section, first select SD as the calculation mode.
A Inputting Sample Data
Frequency On (FreqOn)
The following shows the key operations required when inputting class values
and frequencies Freq1, Freq2, ... Freq
} 1, (;) {Freq1} m (DT)
x
{
1
} 1, (;) {Freq2} m (DT)
{ x
2
} 1, (;) {Freq
xn
{
Note
If the frequency of a class value is only one, you can input it by pressing {
(without specifying the frequency).
Example: To input the following data: (
n
.
} m (DT)
n
x , Freq) = (24.5, 4), (25.5, 6), (26.5, 2)
24.51, (;) 4
m (DT) tells the calculator this is the end of the first data item.
E-29
xn
24 .5 ; 4I
L i ne =
m (DT)
x x xn
, , ... ,
1 2
} m (DT) only
0
1