Key Takeaways
- A 1936 Literary Digest poll predicted Alf Landon would defeat Franklin D. Roosevelt by a landslide with 57% to 43%, but Roosevelt won 61% to 37% due to biased sampling from telephone and car owners favoring Republicans
- In the 1948 US presidential election, Gallup polls showed Thomas Dewey leading Harry Truman by 5 points days before the election, but Truman won by 4.5 points due to failure to account for undecided voters and late swings
- The 1980 Iowa caucuses had polls showing Jimmy Carter leading Ted Kennedy 55-35%, but Kennedy won 59-31% among Democrats due to sampling only likely voters excluding new participants
- Prostate cancer screening studies claimed 20% mortality reduction, but randomized trials showed no benefit and 50 extra cases of overtreatment per 1000 men
- Mammography screening reduces breast cancer mortality by 30% in observational studies, but RCTs like Swedish trial adjusted showed only 10-15% with lead-time bias inflating benefits
- Hormone replacement therapy (HRT) post-menopause cuts heart disease by 50% in observational data, but Women's Health Initiative RCT found 29% increased risk due to healthy user bias
- US GDP growth was 2.9% in Q4 2018, but adjusted for inflation and population growth per capita it was only 1.6% lagging behind 3.7% unemployment claims
- Unemployment rate fell to 3.5% in 2019, but U-6 underemployment including discouraged workers was 6.9% hiding 2.6 million more part-time for economic reasons
- Stock market S&P 500 up 30% in 2020 recovery, but median household wealth unchanged as top 10% captured 90% gains due to concentration in tech stocks
- US crime rate fell 50% 1990-2019 per FBI UCR, but clearance rate dropped from 21% to 12% underreporting violent crimes solved
- Teen birth rate down 73% since 1991 to 16.7 per 1,000, but ignores 20% decline in teen sexual activity and better contraception access
- Divorce rate halved since 1980 to 2.3 per 1,000, but due to fewer marriages and older age at first marriage up 10 years
- Arctic sea ice extent minimum 4.33M km² 2023, lowest on record but 2020 had lower volume due to thickness bias in extent metric
- Global temperature up 1.1°C since 1880 per NASA, but urban heat island adjustment only 30% of stations corrected inflating by 0.1-0.2°C
- CO2 levels 420 ppm 2023 highest in 800k years, but ice core bubbles underestimate past peaks by diffusion smoothing 20-50%
Statistics can mislead due to sampling biases and flawed human interpretation.
Financial Lies
Financial Lies Interpretation
Health Lies
Health Lies Interpretation
Political Lies
Political Lies Interpretation
Scientific Lies
Scientific Lies Interpretation
Social Lies
Social Lies Interpretation
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