When Was It Invented? - Statistics

General Stats

Answer Stats

Item	What Year It Was Invented	% Correct
Cell Phone	1973	71%
Rubik's Cube	1974	57%
Air Conditioner	1902	43%
Doorknobs	1878	29%
Gasoline- Powered Automobile	1886	29%
Traffic Light	1912	29%
Television	1927	29%
Toothbrush	1938	29%
Microwave	1946	29%
Lightbulb	1879	14%
Pencil	1564	0%
Telescope	1608	0%
Typewriter	1714	0%
Cotton Gin	1793	0%
Sewing Machine	1846	0%

Score Distribution

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Percentile by Number Answered

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