Merry Christmas or Happy New Year?

A fun graph of the competition between the¬†phrases “Merry Christmas” and¬†“Happy New Year” (at least in published books that have been incorporated into Google Books) courtesy of Google’s Ngram viewer. More on this enlightening tool to come, inspired by Uncharted: Big Data as a Lens on Human Culture.

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y-axis: of all the bigrams (2-word phrases) contained in Google’s sample of books [written in English and published in the United States], what percentage of them are “Merry Christmas”? Of all the trigrams (3-word phrases), what percentage of them are “Happy New Year”?