Google Books Ngram Viewer

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

1800 - 1959 1960 - 1992 1993 - 1997 1998 - 2003 2004 - 2008 expected value English
1800 - 1929 1930 - 1966 1967 - 1970 1971 - 1992 1993 - 2008 mathematical expectation English
1800 - 1862 1863 - 1951 1952 1953 - 2004 2005 - 2008 mathematical hope English

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