Meanings of collected statistics in English

I once collected statistics on industrial accidents in a sample city-Birmingham ,England ,actually

The Justice Department has collected statistics from every agency on their compliance but won't be issuing a report on them until August.

She collected statistics for several of the Committee, wrote letters, interviewed a few persons, and felt herself growing in usefulness and importance.

Methods: We collected statistics on health care utilization in the ambulatory and inpatient setting along with data on cancers and mortality from 2007 through 2012.