文明交流互鉴是推动人类文明进步和世界和平发展的重要动力.2019年5月“亚洲文明对话大会”在北京成功举办,引起了世界人民的极大关注.某市一研究机构为了了解
岁年龄段市民对本次大会的关注程度,随机选取了100名年龄在该范围内的市民进行了调查,并将收集到的数据制成了尚不完整的频数分布表、频数分布直方图和扇形统计图,如下所示:
组别 |
年龄段 |
频数(人数) |
第1组 |
![](/wiris/showimage?formula=DC34EA2FE4A1E86AD01B513EF7C2D78EEF3569258DDDAE7649824751AA3E3A6F98380531A7F73EC55F5CB5D0D84294B40F3B338ADB8A6A8543DC116F2522D9A4B9FF59223B86F6F909E93B18D07BD6B524D94C5F70D64F35E13C1D177937EAD0AA6F87FE479C946040CDE33B582B49F8)
|
5 |
第2组 |
![](/wiris/showimage?formula=22F00C8F34718CD653430E2B7DCC47D7C16ED041CCCE08B0EE609B8E05EDDE8798380531A7F73EC55F5CB5D0D84294B40F3B338ADB8A6A8543DC116F2522D9A4B9FF59223B86F6F909E93B18D07BD6B524D94C5F70D64F35E13C1D177937EAD0AA6F87FE479C946040CDE33B582B49F8)
|
![](/wiris/showimage?formula=B63926967B6C93A893ACADC1B0E475AD780E437680C2F6F90FE2BFFD56BAAA0198380531A7F73EC55F5CB5D0D84294B40F3B338ADB8A6A8543DC116F2522D9A4B9FF59223B86F6F909E93B18D07BD6B524D94C5F70D64F35E13C1D177937EAD0AA6F87FE479C946040CDE33B582B49F8)
|
第3组 |
![](/wiris/showimage?formula=D43F7E5AE2EAADA8960AA103EAB5F5DD2E890B5A2578DF6BCFB94EEE68C4460498380531A7F73EC55F5CB5D0D84294B40F3B338ADB8A6A8543DC116F2522D9A4B9FF59223B86F6F909E93B18D07BD6B524D94C5F70D64F35E13C1D177937EAD0AA6F87FE479C946040CDE33B582B49F8)
|
35 |
第4组 |
![](/wiris/showimage?formula=6A5B280BC90D100397BB383FA96ED3E5A6DD9E3C7BD79FFE4C639E04B015ED5498380531A7F73EC55F5CB5D0D84294B40F3B338ADB8A6A8543DC116F2522D9A4B9FF59223B86F6F909E93B18D07BD6B524D94C5F70D64F35E13C1D177937EAD0AA6F87FE479C946040CDE33B582B49F8)
|
20 |
第5组 |
![](/wiris/showimage?formula=7D637538168080229C8D12AE4A790A6631AD7FC8F81B889FBDB6FBB9509FEB3E98380531A7F73EC55F5CB5D0D84294B40F3B338ADB8A6A8543DC116F2522D9A4B9FF59223B86F6F909E93B18D07BD6B524D94C5F70D64F35E13C1D177937EAD0AA6F87FE479C946040CDE33B582B49F8)
|
15 |
![](https://media.youtike.com//word/202012/25/1608887965781033698/c0039261-c32d-4139-98e5-c3aa6e276a89.022.png)
(1)请直接写出
,
,第3组人数在扇形统计图中所对应的圆心角是 度.
(2)请补全上面的频数分布直方图;
(3)假设该市现有
岁的市民300万人,问
岁年龄段的关注本次大会的人数约有多少?