Statistics for When Was It Invented?

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General Stats
Answer Stats
Score Distribution
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General Stats

This quiz has been taken 15 times
The average score is 3 of 15

Answer Stats

Item	What Year It Was Invented	% Correct
Cell Phone	1973	60%
Rubik's Cube	1974	60%
Air Conditioner	1902	40%
Doorknobs	1878	20%
Gasoline- Powered Automobile	1886	20%
Traffic Light	1912	20%
Television	1927	20%
Toothbrush	1938	20%
Microwave	1946	20%
Pencil	1564	0%
Telescope	1608	0%
Typewriter	1714	0%
Cotton Gin	1793	0%
Sewing Machine	1846	0%
Lightbulb	1879	0%

Score Distribution

Percentile by Number Answered

Percent of People with Each Score

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