Citizen SRP-280N, SRP-280N/SRP-285N E 16, Single-Variable / Two-Variable Statistics

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.
1n
)xx(
S
2
x−
∑−
=,
1n
)yy(
Sy
2
−
∑−
=
σx or σy Population standard deviation of x values or y
values
n
)xx(
x
2
∑−
=σ ,
n
)yy(
y
2
∑−
=σ
Σx or Σy Sum of all x values or y values