Sharp EL-738 Operation Manual page 69

The estimate of y for a given x (estimate y ´) and the estimate
of x for a given y (estimate x ´) can also be found. When there
are two x values, the COMP symbol will appear. Press @ to
switch between x values.
Exponential regression, logarithmic regression, pow-
er regression, and inverse regression calculations
Section and
The estimate of y for a given x (estimate y ´) and the estimate
of x for a given y (estimate x ´) can also be found. Because the
calculator converts each formula into a linear regression before
actual calculation takes place, it obtains all statistics — except
coeffi cients a and b — from converted data rather than from
entered data.
Variables
n
x
sx
①
σ x
Σ x
2
Σ x
y
sy
σ y
Σ y
2
Σ y
②
Σ xy
a
b
c
r
• Use i or f to perform a variable calculation in STAT
mode.
results, except for coeffi cients c .
Number of samples
Mean of samples ( x values)
Sample standard deviation ( x values)
Population standard deviation ( x values)
Sum of samples ( x values)
Sum of squares of samples ( x values)
Mean of samples ( y values)
Sample standard deviation ( y values)
Population standard deviation ( y values)
Sum of samples ( y values)
Sum of squares of samples ( y values)
Sum of products of samples ( x , y )
Coeffi cient of regression equation
Coeffi cient of regression equation
Coeffi cient of quadratic regression equation
Correlation coeffi cient
Content
68