standard deviaton for top 25 cities in the US by population?

Question

what is the standard deviation of the top 25 cities in the US by population?

Answer 1

Rank City population population^2
1 New York, N.Y. 8,143,197 66,311,657,380,809
2 Los Angeles, Calif. 3,844,829 14,782,710,039,241
3 Chicago, Ill. 2,842,518 8,079,908,580,324
4 Houston, Tex. 2,016,582 4,066,602,962,724
5 Philadelphia, Pa. 1,463,281 2,141,191,284,961
6 Phoenix, Ariz. 1,461,575 2,136,201,480,625
7 San Antonio, Tex. 1,256,509 1,578,814,867,081
8 San Diego, Calif. 1,255,540 1,576,380,691,600
9 Dallas, Tex. 1,213,825 1,473,371,130,625
10 San Jose, Calif. 912,332 832,349,678,224
11 Detroit, Mich. 886,671 786,185,462,241
12 Indianapolis, Ind. 784,118 614,841,037,924
13 Jacksonville, Fla. 782,623 612,498,760,129
14 San Francisco, Calif. 739,426 546,750,809,476
15 Columbus, Ohio 730,657 533,859,651,649
16 Austin, Tex. 690,252 476,447,823,504
17 Memphis, Tenn. 672,277 451,956,364,729
18 Baltimore, Md. 635,815 404,260,714,225
19 Fort Worth, Tex. 624,067 389,459,620,489
20 Charlotte, N.C. 610,949 373,258,680,601
21 El Paso, Tex. 598,590 358,309,988,100
22 Milwaukee, Wis. 578,887 335,110,158,769
23 Seattle, Wash. 573,911 329,373,835,921
24 Boston, Mass. 559,034 312,519,013,156
25 Denver, Colo. 557,917 311,271,378,889
av pop. = 1,377,415
av (pop.^2) = 4,392,611,655,841
variance = av (pop^2) - (av pop)^2 = 2,495,338,802,263.16
standard deviation = sqrt(var) = 1579664.142