User talk:YCSong656

YCSong656 (talk) 21:42, 28 May 2022 (UTC)== Summary tables ==

I created 3 summary tables from the data (https://en.wikipedia.org/wiki/List_of_mass_shootings_in_the_United_States) with the Deadliest 37 mass shootings since 1949, by adding shooter's age and group the shooting places.

The key conclusion from these 3 tables: The most frequent location for mass shootings in the last 23 years have been elementary and high schools. All the school shooters were in the 16-20 age group, – Common sense reasons to raise the legal age for buying guns. There are four more related conclusions.

The other conclusions from these tables: YCSong656 (talk) 16:17, 31 May 2022 (UTC) •	Table 2: Comparing the recent 23 years with the earlier 50-year period, the average number of deaths per year increased almost 10 times from 2.7 to 21.6 deaths per year, while injuries increased by 20 times.

•	Table 2: And the locations for the mass shootings have changed from random places into group settings. Now the most frequent locations are schools and colleges, entertainment places (Las Vegas; nightclubs; movie theaters, etc.), and shopping places (supermarkets, Walmart).

•	Table 1: Most of the shooters are related to the shooting places. For example, all college campus shooters were students there; so were most of the elementary and high school shooters. 16:17, 31 May 2022 (UTC)YCSong656 (talk) •	Table 1: The two states have the most of deadliest shooting records: Texas has 7 out of 37 occurrences of mass shootings; California has 6. The rest of states do not have statistically significant occurrences.

I would like to post my summery paper in a public place for all to revie. But I have no skill to posted here. It only has 3 tables, 1 list, and 5 conclusions. I could email it to you first. You could decide to add to your post, or post it separately. Thank you! YCSong656 (talk) 16:15, 31 May 2022 (UTC)