Final answer:
Without the specific dataset for 'GER's matches and results, we cannot provide the matchid, match dates, and the number of goals scored by 'GER'. We would require game results data specific to 'GER' to extract this information.
Step-by-step explanation:
To answer the question for every match where 'GER' scored, showing the matchid, match date, and the number of goals scored by 'GER', we would need a dataset that includes the match results involving team 'GER'. Unfortunately, the information provided pertains to goals per game from different soccer teams, which does not directly answer the specific question regarding 'GER'. Without the specific dataset for 'GER's matches and results, we're unable to provide the desired matchid, match dates, and the number of goals scored by 'GER'.
However, if we had data similar to the entries in Table 13.14, but specific to 'GER' and their matches, we could certainly extract the requested information. The approach would involve filtering the dataset for matches where 'GER' is listed as a participant, then summarizing the goals scored in those matches alongside the matchid and match dates.