statistics.bgwoodruff.com

Rare and Unusual Events do Happen

25 Girls In A Row Born in One Hospital*

Mount Carmel, Ill. (UPI) -- It's beginning to seem that boy babies have been declared off limits at Wabash General Hospital.

A girl born yesterday was the 25th consecutive female child to arrive at the hospital. The last boy was delivered Sept. 8.

"It's weird." said Louise Williams, secretary to the hospital administrator. "It's just not supposed to happen this way."


*Indianapolis Star
Tuesday, October 7, 1975
(1/2)25 = 2.98 X 10-8
2(1/2)25 = 5.96 X 10-8
P (25 consecutive of 1 sex) = 5.96 X 10-8
P (25 consecutive of 1 sex) = 0.0000000596
Wabash General Hospital District
1418 College Drive
Telephone 618-262-4121
Mount Carmel, Illinois 62863
September 17, 1976

Burrton Woodruff,
Associate Professor
Butler University
Indianapolis, IN 46208

Dear Sir:

In reference to your letter of Septmber 13, 1976, we did have 25 consecutive female infants last year. We averaged 19 births per month with a total of 226 babies born in 1975. Of these 226 total births, 131 were male infants.

We apprecite your interest and hope this information can be of some help to you.

Sincerely,

William R. Milnes,
Administrator

P(Male = 131/226 = 0.58
P(Female) = 0.42

p(25 consecutive Females = (0.42)25 = 3.8 X 10 -10
P(25 consecutive Males) = (0.58)25 = 1.2 X 10-6

P(25 either sex) = 1.20038 X 10 -6
P(25 either sex) = 0.00000120038

In a normal curve this probability is 4.8 standard deviations from the mean. A man whose height is 4.8 standard deviations from the mean would be 6 feet 10.5 inches tall--not impossible, just unlikely


Another unusual event.

"9-1-1 in N. Y. lottery is winner on 9/11"
by Michael Virtanen
Associated Press
Indianapolis Star, Sept 12, 2002, page 2

"ALBANY, N. Y. -- Officials say it was just a coincidence, but many people found it chilling nonetheless: On the anniversary of the Sept 11 terrorist attacks, the winning number in the New York lottery were 9-1-1.

[material ommitted]

A similar coincidence occurred Nov. 12 when the numbers 5-8-7 came up in the New Jersey lottery the day American Airlines Flight 587 crashed in New York City."


© 2002-2006 by BurrtonWoodruff. All rights reserved. Modified Thursday, September 28, 2006