This example data set contains fictional achievement scores of 11637 students from three countries and two times of measurement in two domains (reading and listening comprehension) in the long format. The data set contains nested multiple imputed plausible values of achievement scores as well as some demographic variables. Illustrating trend analyses, data from two fictional time points (2010 and 2015) are included.
The data set can be used for several illustration purposes. For example, if only multiple imputation
should be considered (without nesting), simply use only cases from the first nest (by subsetting). If
only one time of measurement should be considered (i.e., without any trend analyses), simply choose
only cases from 2010 or 2015. If only reading or listening should be considered, choose the desired
domain by subsetting according to the domain
column.
data(lsa)
'data.frame': 77322 obs. of 25 variables
Year of evaluation
individual student identification
class identifier
Total case weight
School weight (level 2 weight)
Student weight (level 1 weight)
jackknifing zone (jk2)
jackknife replicate
Number of imputation
Number of nest (for nested imputation only)
The country an examinee stems from
student's sex
student's socio-economical status
student's migration background
The domain the corresponding score belongs to
student's achievement score (corresponding to the domain reading or listening, and to the imputation 1, 2, or 3)
student's competence level
dichotomous indicator whether the student fails to fulfill the minimal standard
dichotomous indicator whether the student fulfills at least the regular standard
dichotomous indicator whether the student fulfills the optimal standard
linking error of each student's achievement score
linking error of each student's competence level
linking error of each student's indicator of failing to fulfill the minimal standard
linking error of each student's indicator of fulfilling the regular standard
linking error of each student's indicator of fulfilling the optimal standard