## Sabre |

Data preparation in Stata: Grouped means | |

## Sabre manual |
The data we use in this example are a sub-sample from the 1982 High School and Beyond Survey (Raudenbush, Bryk, 2002), and include information on 7,185 students nested within 160 schools: 90 public and 70 Catholic. Sample sizes vary from 14 to 67 students per school. Reference Raudenbush, S.W., Bryk, A.S., 2002, Heirarchical Linear Models, Thousand Oaks, CA. Sage. Data description Number of observations (rows): 7185 Variables school: school identifier
The first few lines of The hsb.dta dataset contains a variable ses for each student and the variable meanses which is the mean of the SES values for the students in this school. If this school level variable had not been made available with the data set it would need to be created. To create the mean value of 'ses' in Stata for each school based on the students in the sample, we would use the commands sort school This data set can be used in Sabre, see for example, Examples C1 and C2 .. |

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