search for: mathema

Displaying 1 result from an estimated 1 matches for "mathema".

2011 Oct 20
2
Aggregating data help
Hello, I have a dataset with student performance on a math test. There are multiple cases for each student (identified by id) and the concept as a variable. > rtest id test subject grade concept correct tested per_corr year 1 1 83 Mathema 8 8.2.D 1 1 100 2011 2 1 83 Mathema 8 8.3.A 1 2 50 2011 3 1 83 Mathema 8 8.3.B 2 2 100 2011 4 1 83 Mathema 8 8.4 2 2 10...