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Chapter 8: Statistics & Regression Calculations
5. Regression Calculations
Accessing the
regression menu
01 MedMed
02 ax+b
03 a+bx
04 x
2
05 ln
134
1. Press S D (D REG).
The Regression menu is displayed.
Med_Med (list name for x, list name for y [, frequency list] [,
equation name to store])
Finds the regression line using the median-median method.
(linear regression)
+
Formula: y = ax
b
Parameters: a, b
Rg_ax+b (list name for x, list name for y [, frequency list] [,
equation name to store])
Finds the regression line. (linear regression)
+
Formula: y = ax
b
Parameters: a, b, r, r
Rg_a+bx (list name for x, list name for y [, frequency list] [,
equation name to store])
Finds the regression line. (linear regression)
+
Formula: y = a
bx
Parameters: a, b, r, r
Rg_x
2
(list name for x, list name for y [, frequency list] [,
equation name to store])
Finds the regression line using the second degree polynomial.
(quadratic regression)
+
Formula: y = ax
2
Parameters: a, b, c, R
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
2
+
bx
c
2
2
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