Canon F715sg User Guide

							Linear regression The Linear regression formula is in relation to two variables:
y =  A + Bx
  Example: By the following investment and yield table, calculate the 
linear regression (regression coe fficient  A, regression coe fficient B) of 
capital investment verse yield, the correlation coe fficient, the minimum 
value of investment, the maximum value of yield (%), and the yield 
percentage at 45 thousand unit of investment, and the investment unit 
at 180% yield.
Investment (thousand unit)
Y ield (%)
20
120 30
126 40
130 50
136 60
141
Correlation coe fficient  r r                        
Regression estimated value  xx                             
Regression estimated value  yy                             
Summation of all x
3 values    x3
Summation of all x2y pairs   x2y                        
Summation of all x4 values    x4
Regression coefficient C C                        
Regression estimated value x 
1x 1
Regression estimated value x 2x 2
Regression estimated value  yy                             
For non-quadratic regression
For Quadratic regression only
.
0
 
 
 
 
 
 
 
 
 
 
 
 
               Stat Clear
.
5
=
 
n
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
8
.
9
0
1
A
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2
5
.
0
B
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
r0.998523984
OperationDisplay (Lower)Display (Upper)
 (Lin Regression)
 
 (Clear Stat. memory)
 
 
---------------
31 
						

							Advertisement expenses: x
Effectiveness: y (%)18
3835
5440
5921
4019
38
               
minX20.
                    maxY141.
45 y 133.2
180  x 135.
OperationDisplay (Lower)Display (Upper)
Logarithmic, Exponential, Powe r, and Inverse Regression Formulas
  Logarithmic Regressio n:y =  A + Blnx
  Exponential Regressio n:y =  Ae
Bx (lny = lnA  + Bx) 
  Power Regressio n:y =  AxB (lny = lnA  + Blnx)
  Inverse Regressio n:y =  A+Bx -1
Quadratic Regression The quadratic regression is in relation to the formula: 
y =  A + Bx + Cx2  Example:  ABC company investigated the e ffectiveness of the 
advertisement expenses in coded units, the following data were 
obtained:
Please calculate the correlation coe fficient; use the regression to 
estimate the ef fectiveness (estimate the value of y) if the 
advertisement expenses x = 30, and estimate the advertisement 
expenses level (estimate the value of x
1, x2) for the ef fectiveness y=50 
(M inimu m In ve stm en t)
(Ma ximu m Y ie ld )
(Y ield %)
(In ve stm en t u n it )
  ( Q uad  Regress ion)
 
------------
32 
						

							LO W  B AT TE R Y
BATTER Y REPL ACEMENT
W hen t he display charact ers are  dim  even  a dark er LCD  contrast  had 
been  adjust ed O R the f ollowing  Low battery  message  appears  on the 
displa y,  replac e the  battery  immediat ely .
P lease  replace t he lithium  battery  by the f ollowing  procedures :
1 . Press               t o power  off the c alculat or.  
2 . Remov e the s crew  which s ecurely fi x the battery cover  in place .
3 . Slide t he battery c over  slight ly  and  lift it .
4 . Remove t he old  battery  with a  ball  pen  or similar  sharp  object.
5 . Load t he new  battery  with the  pos it iv e  + side f acing  up.
6 . Replace t he battery  cover,  s cre w, and  press the       
Caution: Risk of explosion if battery is replaced by an incorrect type. 
Dispose of used batteries according to the instruction.
Electromagnetic interference or electrostatic discharge may 
cause the display to malfunction or the contents of the memory 
to be lost or altered. Should this occu r, press the        and  
  to restart the calculator .
 to  init ializ e the c alculat or.,
            
33 
						

							ADVICE AND PREC AUTIONS
This calculator contains precision components such as LSI chips 
and should not be used in place subject to rapid variations in 
temperature, excessive humidity dirt or dust, or exposed to direct 
sunlight.
The liquid crystal display panel is made of glass and should not 
be subjected to excessive pressure.
When cleaning the device do not use a damp cloth or a volatile 
liquid such as paint thinne r. Instead, use only a soft, dry cloth.
Do not under any circumstances dismantle this device. If you 
believe that the calculator is not functioning properl y, either bring 
or mail the device together with the guarantee to the service 
representative of a Canon business o ffice.
Keep the battery out of reach of children. If the battery is 
swallowed, contact a doctor immediatel y.
Misuse of battery may cause leakage, explosion, damages or 
personal injur y.
Dont recharge or disassemble the batter y, it could cause a short 
circuit. 
Never expose the battery to high temperatures, direct heat, or 
dispose by incineration.
Never leave a dead battery in the calculator as the dead battery 
may leak and cause damage to the calculato r.
Continue using the calculator as the battery is low can cause 
improper operation and the stored memory may be corrupted or 
lost completel y. Keep the written records of important data all the 
time; and replace the battery as soon as possible.
Do replace the battery once every two years even it is not used 
frequentl y.
Battery Cautions!
34 
						

							SPECIFICATIONS
Power Suppl y: Solar cell and a single Alkaline battery (LR44 x 1)
Power Consumptio n: D.C. 1.5V / 0.1mW
Battery Life : Approximately 3 years 
Auto Power Of f: Approx. 7 minutes
Usable  T emperatur e: 0 ~ 40
oC
* Specifications are subject to change without notice
(Base on 1 hour of operation per day)
Size : 165 (L) x 80 (W) x 14 (H) mm (body) 
          168 (L) x 86.3 (W) x 17.8 (H) mm (with case)
Weight : 89 g (body) / 124 g (with case)
35
© CANON ELECTRONIC BUSINESS MACHINES (H.K.) CO., LTD. 2013
PRINTED IN CHINA                                                                        \
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