最大と最小
↑ Hazewinkel, Michiel, ed. (2001), “Maximum and minimum of a function”, Encyclopedia of Mathematics, Springer, ISBN 978-1-55608-010-4, https://www.encyclopediaofmath.org/index.php?title=Maximum_and_minimum_of_a_function
↑ Hazewinkel, Michiel, ed. (2001), “Maximum and minimum points”, Encyclopedia of Mathematics, Springer, ISBN 978-1-55608-010-4, https://www.encyclopediaofmath.org/index.php?title=Maximum_and_minimum_points
↑ 西岡 2013, p. 8 「1.4 度数分布」
↑ USA-Todayの記事
↑