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Citizen SRP-285 Manual

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E - 14
m
e Electron mass 9.109389754 x 10
–31
kg
m
p Proton mass 1.672623110 x 10
–27
kg
h Plank’s constant 6.626075540 x 10
–34
J.s
k Boltzmann’s constant 1.38065812 x 10
–23
J.K
–1
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 Meaning
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.
σσ
σσ
σ x
or
σσ
σσ
σ y
Population standard deviation of x values or y values
ΣΣ
ΣΣ
Σ x or
ΣΣ
ΣΣ
Σ y Sum of all X values or y values
ΣΣ
ΣΣ
Σ x
2
or
ΣΣ
ΣΣ
Σ y
2
Sum of all x
2
values or y
2
values
… 16 …


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