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e
Electron mass
m
p
Proton mass
m
h
Plank's constant
k
Boltzmann's constant
To insert a constant at the cursor position ( See Example 37.) :
1.
Press [ CONST ] to display the physics constants menu.
2.
Press [ ] until the constant you want is underlined.
3.
Press [ ENTER ].
3 Mode 1 - STAT
There are three menu operation in statistics menu : 1 -VAR ( for analyzing
data in a single dataset), 2 - VAR ( for analyzing paired data from two
datasets ) and CLR- DATA ( for clearing all datasets). See Example 38.
To enter data for statistical analysis :
1.
From the statistics menu, choose 1 -VAR or 2 - VAR.
2.
Press [ DATA ].
3.
Enter an X - values and press [ ].
4.
Enter the frequency ( FREQ for SRP-280 / F for SRP-285) of the X
- value (in 1 -VAR mode) or the corresponding Y - value ( in 2 - VAR
mode ) and press [ ].
5.
To enter more data, repeat from step 3.
To analyze data you have entered :
1.
Press [ STATVAR ]. A range of statistical variables (see table
below ) is displayed on the statistical result menus. The first
variable ( n ) is underlined and its value is on the result line.
2.
Press [ ] to scroll through the statistical results menu. The value
of each variable is displayed on the result line.
3.
To use a value in a calculation, press [ ENTER ] when the values
is displayed. The values is copied to the entry line.
4.
To predict a value for x ( or y ) given a value for y ( or x ), select the
x ' ( or y ' ) variable, press [ ENTER ], enter the given value, and
press [ ENTER ] again.
Variable
n
Number of x values or x-y pairs entered.
_
_
x or y
Mean of the x values or y values
Sx or Sy
Sample standard deviation of x values or y values.
σ σ σ σ σ x or σ σ σ σ σ y
Population standard deviation of x values or y values
Σ Σ Σ Σ Σ x or Σ Σ Σ Σ Σ y Sum of all X values or y values
Σ Σ Σ Σ Σ x
2
or Σ Σ Σ Σ Σ y
2
Sum of all x
9.109389754 x 10
1.672623110 x 10
6.626075540 x 10
1.38065812 x 10
Meaning
2
values or y
2
values
E - 14
kg
–31
kg
–27
–34
J.s
J.K
–23
–1
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