HP Prime Graphing Wireless Calculator Instrukcja Użytkownika Strona 334

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Inference for regression
An HP Prime calculator can perform tests and calculate intervals based on inference for linear regression.
These calculations are based on the t-distribution.
Linear t-test
Menu name
Linear t test
This option performs a t-test on the true linear regression equation, based on a list of explanatory data and a
list of response data. You must choose an alternative hypothesis in Symbolic view using the Alt Hypoth eld.
Inputs
The Numeric view inputs are as follows:
Field name Description
Xlist The list of explanatory data
Ylist The list of response data
Results
When is tapped, the results are as follows:
Results Description
Test T The value of the t-test statistic
P The probability associated with the t-test statistic
DF The degrees of freedom
β
0
The intercept of the calculated regression line
β
1
The slope of the calculated regression line
serrLine The standard error of the calculated regression line
serrSlope The standard error of the slope of the calculated regression line
serrInter The standard error of the intercept of the calculated regression line
r The correlation coeicient of the data
R
2
The coeicient of determination of the data
Menu keys
The menu key options are as follows:
286 Chapter 13 Inference app
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