when a period is missing from a time series why are there time series without missing data why do we use multiple imputations in time series can we insert case data when there is no time series how to find missing data in a time series missing data on a time series missing data in a time series what is meant by missing data missing data in time series in medical terminology what is the problem with missing data? how to handle a missing data in time series can you imputation missing cases on a timeline how to handle missing data in a time series how to handle missing data how does a time series work when is missing data needed in time series what would be missing in a data series is a time series missing data can i inserted a timeline with a count based data set which of the following is a missing data in a timeline