Casio fx-5800P User Manual page 81

A Performing a Specifi c Regression Calculation
Example: To use the statistical data shown below to perform logarithmic regression to
obtain the correlation coeffi cient and the estimated value of
1. Display the logarithmic regression calculation result screen.
2. Press J to return to the STAT editor screen.
1 ( / COMP) to display the COMP Mode calculation screen.
3. Press
4. Determine correlation coeffi cient r and the estimated value of
• Correlation Coeffi cient
• Estimated Value of
Note
• The r and values produced by this example are for logarithmic regression because
we fi rst displayed the logarithmic regression calculation screen in step 1 before using
the commands to calculate the values were wanted. If you do not display a particular
regression calculation result screen fi rst, the values produced by the commands are for
linear regression by default.
• For details about statistical calculation commands, see "REG Mode Statistical Command
Reference" (page 80).
A REG Mode Statistical Command Reference
Mean and Standard Deviation Commands
n
Obtains the number of samples.
x y
29
50
74
103
118
6 (RESULT) 2 (Reg) 3 (Log)
y x
when = 100
100
n
= (number of
1.6
23.5
38.0
46.4
48.9
7 (STAT) 2 (VAR)
4 (r)
7 (STAT) 2 (VAR)
7 ( )
x
i -data items)
E-80
y x
when = 100
y x
when = 100.
7 (STAT) 2 (VAR) 1