grades

The data set contains first-year grade point averages (GPAs) from 2397 Iowa university
first-years who entered the university of Iowa as freshmen in the fall of 1978. 
The GPAs are separated out by two ordinal variables with 9 categories each, High-School-Ranking
percentiles and ACT Classification.

 datasets

Implements inequality constrained inference. This includes parameter estimation in normal (linear) models under linear equality and inequality constraints, as well as normal likelihood ratio tests involving inequality-constrained hypotheses. For inequality-constrained linear models, averaging over R-squared for different orderings of regressors is also included.

Ulrike Groemping

ic.infer

Inequality Constrained Inference in Linear Normal Situations

grades function

A data frame with four columns:<dl>
<dt>HSR</dt>
<dd>high-school-ranking percentiles</dd><dt>ACTC</dt>
<dd>ACT classification (ACT is an organization that offers, among other things, 
college entrance exams in the US; up to 1996, ACT stood for &#8220;American College Testing&#8221;.)</dd><dt>meanGPA</dt>
<dd>grade point average for the HSR/ACTC combination</dd><dt>n</dt>
<dd>sample size for the HSR/ACTC combination</dd>
</dl>

Format

Author

Data set grades: Grade point averages by HSR and ACTC — grades

A data frame with four columns:<dl>
<dt>HSR</dt>
<dd>high-school-ranking percentiles</dd>

<dt>ACTC</dt>
<dd>ACT classification (ACT is an organization that offers, among other things, 
college entrance exams in the US; up to 1996, ACT stood for &#8220;American College Testing&#8221;.)</dd>

<dt>meanGPA</dt>
<dd>grade point average for the HSR/ACTC combination</dd>

<dt>n</dt>
<dd>sample size for the HSR/ACTC combination</dd>


</dl>

grades: Data set grades: Grade point averages by HSR and ACTC

Description

Usage

Arguments

Format

Author