CITIZEN SRP-285N - Manual (Page 17)

E – 16
File name : CBM_SR285,A_HDBSR285T19_English.doc
version : 2010/04/26
To insert a constant at the cursor position ( See Example 52. ) :
1. Press [ CONST ] to display the physical constants menu.
2. Press [ ] until the constant you want is underlined.
3. Press [ ].
Mode 1 - STAT
There are three menu operations in statistics menu : 1–VAR ( for
analyzing data in a single dataset), 2–VAR ( for analyzing paired
data from two datasets ) and D–CL ( for clearing all datasets). See
Example 38.
„ Single-Variable / Two-Variable Statistics
Step :
1. From the statistics menu, choose 1–VAR or 2–VAR and
press [ ].
2. Press [ DATA ] and there are three menus: DATA–INPUT,
LIMIT–SET, DISTR. Please select DATA–INPUT and press
[
].
3. Enter an x - value and press [ ].
4. Enter the frequency ( FREQ ) 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.
6. Press [ 2nd ] [ STATVAR ] and scroll through the statistical
result menus by [ ] or [ ] to find out statistical variables
you want. ( See table below )
Variable Meaning
n Number of the x values or x-y pairs entered.
or Mean of the x values or y values
Xmax or Ymax Maximum of the x values or y values
Xmin or Ymin Minimum of the x values or y values
Sx or Sy
Sample standard deviation of x values or y
values.
1 n
) x x (
S
2
x
−
∑ −
= ,
1 n
) y y (
Sy
2
−
∑ −
=
σ x or σy Population standard deviation of x values or y
values
n
) x x (
x
2 ∑ −
= σ ,
n
) y y (
y
2 ∑ −
= σ
Σ x or Σy Sum of all x values or y values