HP Prime Graphing Wireless Calculator - Manual (Page 98)

94 Inference app
Confidence interval for intercept
Menu name Interval: Intercept
This option calculates a confidence interval for the
intercept of the true linear regression equation, based on
a list of explanatory data, a list of response data, and a
confidence level. After you enter your data in Numeric
view and tap
, enter the confidence level in the
prompt that appears.
Inputs The Numeric view inputs are as follows:
Results When is tapped, the results are as follows:
Field
name
Definition
Xlist The list of explanatory data
Ylist The list of response data
C The confidence level (0 < C < 1)
Field
name
Definition
C The input confidence level
Crit. T The critical value of t
DF The degrees of freedom
β
0
The intercept of the calculated regres-
sion line
serrInter The standard error of the y-intercept of
the regression line
Lower The lower bound of the confidence
interval for the intercept
Upper The upper bound of the confidence
interval for the intercept