Sharp el-9950 - Page 164

163
Chapter 8: Statistics & Regression Calculations
06 Rg_x
3
Rg_x
3
(list name for x, list name for y [, frequency list] [,
equation name to store])
Findstheregressionlineusingthethirddegreepolynomial.(cubic
regression)
Formula:y=ax
3
+
bx
2
+
cx
+
d
Parameters:a,b,c,d,R
2
07 Rg_x
4
Rg_x
4
(list name for x, list name for y [, frequency list] [,
equation name to store])
Findstheregressioncurveusingthefourthdegreepolynomial.
(quartic regression)
Formula:y=ax
4
+
bx
3
+
cx
2
+
dx
+
e
Parameters:a,b,c,d,e,R
2
08 Rg_ln Rg_ln (list name for x, list name for y [, frequency list] [,
equation name to store])
Findstheregressioncurveusingthenaturallogarithm.(natural
logarithm regression)
Formula:y=a
+
b ln x
Parameters:a,b,r,r
2
09 Rg_log Rg_log (list name for x, list name for y [, frequency list] [,
equation name to store])
Findstheregressioncurveusingthecommonlogarithm.(common
logarithm regression)
Formula:y=a
+
b log x
Parameters:a,b,r,r
2
10 Rg_ab
x
Rg_ab
x
(list name for x, list name for y [, frequency list] [,
equation name to store])
Findstheregressioncurveusingtheexponentialfunction.
(exponential regression)
Formula:y=ab
x
Parameters:a,b,r,r
2
11 Rg_ae
bx
Rg_ae
bx
(list name for x, list name for y [, frequency list] [,
equation name to store])
FindstheregressioncurveusingtheEulerexponentialfunction.
(Euler exponential regression)
Formula:y=ae
bx
Parameters:a,b,r,r
2