Google Books Ngram Viewer

Graph these comma-separated phrases:
case-insensitive
between and from the corpus with smoothing of .  
Search in Google Books:

1800 - 1956 1957 - 1999 2000 - 2003 2004 - 2005 2006 - 2008 erwartungswert German
1800 - 1915 1916 - 1964 1965 - 1968 1969 - 1973 1974 - 2008 mathematische erwartung German
1800 - 1848 1849 - 1900 1901 1902 - 1934 1935 - 2008 mathematische hoffnung German

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