Regression Calculation; Chapter 7 : Basen Calculations - HP 9g - Graphing Calculator User Manual

Graphing calculator.

R(t)
Q(t)

Regression Calculation

There are six regression options on the REG menu:
LIN
Linear Regression
LOG
Logarithmic Regression
e ^
Exponential Regression
PWR
Power Regression
INV
Inverse Regression
See Example 47~48.
1.
Select a regression option on the REG menu and press [
2.
Press [ DATA ], select DATA-INPUT from the menu and press [
3.
Enter an x value and press [
4.
Enter the corresponding y value and press [
5.
To enter more data, repeat from step 3.
6.
Press [ 2nd ] [ STATVAR ].
7.
Press [
] [
regression variables you are interested in (see table below).
8.
To predict a value for x (or y) given a value for y (or x), select the x '
(or y ') variable, press [
again.
Variable
a
b
r
c
x '
y '
9.
To draw the regression graph, press [ Graph ] on the STATVAR menu.

Chapter 7 : BaseN Calculations

The cumulative fraction of the standard normal
distribution that lies between t and 0. R(t) = 1 – t.
The cumulative fraction of the standard normal
distribution that is greater than t. Q(t) = | 0.5– t |.
] to scroll through the results until you find the
] , enter the given value, and press [
Meaning
Y-intercept of the regression equation.
Slope of the regression equation.
Correlation coefficient.
Predicted x value given a, b, and y values.
Predicted y value given a, b, and x values.
y = a + b x
y = a + b lnx
y = a • e
bx
y = a • x
b
y = a +
y = a + b x + c x
].
E-24
2
] .
].
].
]