As is well known storks bring newborns Heres my evidence Data adapted by Box Hunter and Hunter from G Fischer Ornithologische Monatsberichte vol 44 no 2 Jahrgang 1936 Berlin and vol 48 No 1 ID: 412713
Download Presentation The PPT/PDF document "Where do babies come from?" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1Slide2Slide3
Where do babies come from?As is well known, storks bring newborns.
Here’s my evidence:
Data adapted by Box, Hunter, and Hunter from G. Fischer,
Ornithologische
Monatsberichte
, vol. 44, no. 2,
Jahrgang
, 1936, Berlin and vol. 48, No. 1,
Jahrgang
, 1940, Berlin, and
Statistiches
Jahrbuch
Deutscher
Gemeinden
, 27-33,
Jahrgang
, 1932-1938.Slide4Slide5Slide6
Where do babies come from?As is well known, storks bring newborns.
Here’s my evidence:
Data adapted by Box, Hunter, and Hunter from G. Fischer,
Ornithologische
Monatsberichte
, vol. 44, no. 2,
Jahrgang
, 1936, Berlin and vol. 48, No. 1,
Jahrgang
, 1940, Berlin, and Statistiches Jahrbuch Deutscher Gemeinden, 27-33, Jahrgang, 1932-1938.
The correlation is 0.94.Slide7
Does correlation = causation?
The population of Oldenburg grew steadily in the 1930’s. As the population increased, there was more building construction, providing more nesting places for storks.
As the population increased, there were more people to have babies.Slide8
Does correlation = causation?
The population of Oldenburg grew steadily in the 1930’s. As the population increased, there was more building construction, providing more nesting places for storks.
As the population increased, there were more people to have babies.Slide9Slide10Slide11Slide12
Is population a lurking variable?Slide13
Example of confounding:Smoking in pregnancy is associated with lower birth weights.Slide14Slide15Slide16Slide17