Canon F-73 - Statistical Expressions

and
of line
(y=a+bx) and
correlation coefficient
(r) from the sales
amount
taJole the last 5 years.
Then estimate the year
in which the
sales amount will reach i 00 million dol-
lars.
* The sales amounts are entered in common loga-
rithm.
52
Operation
~~[ill
log SUM I
Dill @Q) I
log SUM
aoJ (ill)
log SUM
CI!D (gQ)
log SUM
OlD(§)
log SUM
Dill (ill)
llilf '
CJGJ
lml a
CJCD
lml b
CJQD
Display
0
0.
0.0000
1. 0000
2.0000
3.0000
4.0000
5.0000
Explanation
Specifies two-variable
statistical mode
Clears lhe storage
memory
Specifies decimal
point selection at 4
digits.
Entry ol variables
0 9373
-212.28381 a
o .1 oso 1 b
1984.8257
In "1984, the sales
amount will reach
100 million dollars.
SUI1l oi variables (x)
So,uare sum of
variables (x)
i·J umber of variables
Mean value ol
variables (x)
s;;;:,a;:;:;;nda=rd d:;:;ev=iatio;::-n ~~~~-~===-----
S8mp!e of variables
(;:)
Standard deviation
Population parameter
ol· variables (x)
I
s-,-,C-0 -oi_v_a-ri-ab-1-es-(y-)- l~lill 2: lJ I ,. v
CJQD ~.
Squaresumof !Wld Zl!J" I "
'"'""'ri""a'"-bl::::e:;_s_,lyccl ____ f-_eco='o.::Gb :':: v"
MeE!!l value of ~ I ~ v
. bl I) I v=~~-~
vana es y .
Standard deviation I
semple of variables 1~11 y~o-• 12: \'2 _ ( I_v
12
(y) CJCD , - n
S\andard deviation j ----;;=..-1---
Po~Ju!ation parameter
o·i variables (y)
Sum of product of
variables lx, y)
lniercepl(a) of
regression line
Ciradien!
(b) of
m:Jression line
Correlation
coar-ficient (r)
E.stimate (x)
yon
GJ
1&'11 a
CJCD
!
' 2_~
~Y n
------
,; il
n· :Sxv- =:x· :Zv
n · 2:_~L ( 2:x)
2
n·"'·o-
"r· >v
vln·Zx
2
6~J
2
i·l~·~>-(Zy)'l
Y-a
x=-b-
Eslimate (y)
I.Y=a+bx
53