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Chapter 8: Statistics & Regression Calculations
–1
12 Rg_x
Rg_x
equation name to store])
Finds the regression curve using the reciprocal function. (reciprocal
regression)
Formula: y = a
Parameters: a, b, r, r
b
13 Rg_ax
Rg_ax
equation name to store])
Finds the regression curve using the power function. (power
regression)
Formula: y = ax
Parameters: a, b, r, r
14 Rg_logistic
Rg_logistic (list name for x, list name for y [, frequency list] [,
equation name to store])
Finds the regression curve using the logistic function. (logistic
regression)
Formula: y = c
Parameters: a, b, c
15 Rg_sin
Rg_sin ([iterations,] list name for x, list name for y [, frequency
list] [, period] [, equation name to store])
Finds the regression curve using the sine function.
The calculator will fit a sine curve for unequal and equal spacing.
Formula: y = a sin(bx
Parameters: a, b, c, d
Note:
The default iterations value is 3. The user may specify the value up
to 25. To raise the accuracy, set the iterations value to 25 and enter
2π/b to the period, where b = result obtained from the calculation
beforehand.
164
–1
(list name for x, list name for y [, frequency list] [,
-
1
+
bx
2
b
(list name for x, list name for y [, frequency list] [,
b
2
-
bx
÷
+
(1
ae
)
+
+
c)
d
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