simpson’s paradox how does it happen?
Post on 10-Feb-2016
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DESCRIPTION?. ?. ?. SIMPSONS PARADOX How does it happen?. Pamela Leutwyler. A perfume company is testing two new scents: Citrus And Orange blossom. 28 single women volunteer to test these products. 15 are Eagles cheerleaders. 13 are members of Grannys bingo club. 13 women choose CITRUS. - PowerPoint PPT Presentation
How does it happen????Pamela Leutwyler
A perfume company is testing two new scents:
28 single women volunteer to test these products
15 are Eagles cheerleaders13 are members ofGrannys bingo club
13 women choose CITRUS15 women choose ORANGE
4 OF THE 5 CHEERLEADERSWHO USED CITRUS FOUND LOVE!80% success rate 7 OF THE 10 CHEERLEADERSWHO USED ORANGE FOUND LOVE!70% success rateCITRUS appears to be more effective for cheerleaders
80% success rate70% success rate 2 OF THE 8 GRANNIESWHO USED CITRUS FOUND LOVE! 1 OF THE 5 GRANNIESWHO USED ORANGE FOUND LOVE!CITRUS appears to be more effective for grannies25% success rate20% success rate
80% success rate70% success rate25% success rate20% success rateCITRUS is better for cheerleadersCITRUS is better for grannies
6 of the 13 women who usedCitrus found love. 46%8 of the 15 women who usedOrange found love. 53%Overall Orange has a higher success rate
How can it happen thatCITRUS works better for cheerleaders andCITRUS works better for granniesWhileORANGE works better overall???Where are most of the grannies?Where are most of the cheerleaders?