Uploaded on 2014-10-21 by ritchie_yg

[1]: https://edxuploads.s3.amazonaws.com/1413908400792089.jpg The photo is about the regional local school / college taking students from primary, secondary and sixth form. A sports center is built adjacent to the educational complex serving both the pupils and local residents. The numbers of pupils are different every year. Invisible information can be extracted from the pupils data. The age range of the students and their ethnic group. The users of the sports center can give indication of the combination of age group of residents including retired pensioners.