what time does a library close do you use attendance data when checking on students why is attendance data not continuous why is attendance data not continuous why is attendance data so different from attendance data what does it mean when the library is open what is the purpose of time series why do we use time series to collect attendance data? when are library hours why is attendance data cyclical how long are attendances continuous over time how long is it a time series to get attendance data how long is a typical attendance data gap time series data how many hours does the school library open how to analyze the attendance period how many hours are the library open when is the library open can you use attendance data to analyze time series how many days are the attendance hours at university when are cyclical attendance data used in a time series?