Chapter 13: Inferential Statistics and Distributions
237
LinRegTInt
LinRegTInt computes a linear regression T confidence interval for the slope coefficient b. If the
confidence interval contains 0, this is insufficient evidence to indicate that the data exhibits a linear
relationship.
In the example:
list 1={4, 5, 6, 7, 8}
list 2={1, 2, 3, 3.5, 4.5}
Xlist, Ylist is the list of independent and dependent variables. The list containing the
Freq
(frequency) values for the data is stored in
List
. The default is 1. All elements must be real
numbers. Each element in the
Freq
list is the frequency of occurrence for each corresponding data
point in the input list specified in the
List
fields. RegEQ (optional) is the designated Yn variable for
storing the regression equation. StoreRegEqn (optional) is the designated variable for storing the
regression equation. The C level is the Confidence level probability with default = .95.
LinRegTInt input
screen:
Note:
Press
… ~ ~
to
select
TESTS
. Press
†
several times to select
G:LinRegTint...
Press
Í
.
Press
†
several
times to select
Calculate
.
Press
Í
.
Calculated
results:
