Description Usage Format Details Source References Examples

A key example dataset used for examples in the HLM software manual. Included here for use in replicating HLM analyses in R.

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A data frame with 7,185 observations on the following 8 variables.

`schid`

a numeric vector, 160 unique values

`mathach`

a numeric vector for the performance on a standardized math assessment

`female`

a numeric vector coded 0 for male and 1 for female

`ses`

a numeric measure of student socio-economic status

`minority`

a numeric vector coded 0 for white and 1 for non-white students

`schtype`

a numeric vector coded 0 for public and 1 for private schools

`meanses`

a numeric, the average SES for each school in the data set

`size`

a numeric for the number of students in the school

The data file used for this presentation is a subsample from the 1982 High School and Beyond Survey and is used extensively in Hierarchical Linear Models by Raudenbush and Bryk. It consists of 7,185 students nested in 160 schools.

Data made available by UCLA Institute for Digital Research and Education (IDRE) online: https://stats.idre.ucla.edu/other/hlm/hlm-mlm/introduction-to-multilevel-modeling-using-hlm

Stephen W. Raudenbush and Anthony S. Bryk (2002). Hierarchical Linear Models: Applications and Data Analysis Methods (2nd ed.). SAGE.

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```
Loading required package: arm
Loading required package: MASS
Loading required package: Matrix
Loading required package: lme4
arm (Version 1.9-3, built: 2016-11-21)
Working directory is /work/tmp
Loading required package: dplyr
Attaching package: 'dplyr'
The following object is masked from 'package:MASS':
select
The following objects are masked from 'package:stats':
filter, lag
The following objects are masked from 'package:base':
intersect, setdiff, setequal, union
schid minority female ses mathach size schtype meanses
1 1224 0 1 -1.528 5.876 842 0 -0.428
2 1224 0 1 -0.588 19.708 842 0 -0.428
3 1224 0 0 -0.528 20.349 842 0 -0.428
4 1224 0 0 -0.668 8.781 842 0 -0.428
5 1224 0 0 -0.158 17.898 842 0 -0.428
6 1224 0 0 0.022 4.583 842 0 -0.428
```

merTools documentation built on June 5, 2018, 9:04 a.m.

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