I have a range of numbers listed below. I want to smooth them out to be
closer to the average of 423,000. I would like to set a minumum of 350,000
and a maximum of 575,000 or thereabouts. Which statistical function(s)
should I use?

507,946
713,695
413,505
256,822
277,154
794,495
679,093
178,376
308,652
449,225
698,341
363,686
375,933
264,610
498,582
310,760
342,731
620,156
355,224
340,426
247,197
295,597
291,706
369,606
462,799
583,680