alleryPlayfair's Commercial and political atlas, using bars for statistics, came out in which year?
A1786
B1892
C1895
D1936
Answer & Solution
Correct answer: A. 1786
1. Playfair devised bars for statistical measurements.
2. They appeared in his Commercial and political atlas.
3. That book is dated 1786.
1892 and 1895 are the years Pearson named and discussed the histogram, and 1936 is unrelated.
_Source: Wikipedia, Histogram, Etymology_
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