Question: Psychohistory is a fictional science in which Isaac Asimov science fiction book series which combines history, sociology and mathematical statistics to make predictions about the future behaviour of very large groups of people and most notably described in his trilogy series which won him the Hugo award and which reference other works by the author including 'Robot' and 'Empire'?
Context: The Hugo Winners was a series of books which collected science fiction and fantasy stories that won a Hugo Award for Short Story, Novelette or Novella at the World Science Fiction Convention between 1955 and 1982.  Each volume was edited by Isaac Asimov, who wrote the introduction and a short essay about each author featured in the book.  Through these essays, Asimov reveals personal anecdotes, which authors he's jealous of, and how other writers winning awards ahead of him made him angry.  Additionally, he discusses his political beliefs (he supported the ending of the Vietnam War, while Poul Anderson didn't), friendships, and his affinity for writers of "hard science fiction".  The first two volumes were collected by Doubleday into a single book, which lacks a publishing date and ISBN. Psychohistory is a fictional science in Isaac Asimov's "Foundation" universe which combines history, sociology, and mathematical statistics to make general predictions about the future behavior of very large groups of people, such as the Galactic Empire.  It was first introduced in the four short stories (1942–1944) which would later be collected as the 1951 novel "Foundation". A mathematical model is a description of a system using mathematical concepts and language.  The process of developing a mathematical model is termed mathematical modeling.  Mathematical models are used in the natural sciences (such as physics, biology, Earth science, meteorology) and engineering disciplines (such as computer science, artificial intelligence), as well as in the social sciences (such as economics, psychology, sociology, political science).  Physicists, engineers, statisticians, operations research analysts, and economists use mathematical models most extensively .  A model may help to explain a system and to study the effects of different components, and to make predictions about behaviour. Isaac Asimov's Robot City: Odyssey is a young adult science fiction novel written in 1987 by Michael P. Kube-McDowell.  It is part of the series Isaac Asimov's Robot City, inspired by Isaac Asimov's "Robot" series.  The 1995 computer game Robot City is based on the plot of "Odyssey". "The Last Question" is a science fiction short story by American writer Isaac Asimov.  It first appeared in the November 1956 issue of "Science Fiction Quarterly" and was anthologized in the collections "Nine Tomorrows" (1959), "The Best of Isaac Asimov" (1973), "Robot Dreams" (1986), the retrospective "Opus 100" (1969), and in "Isaac Asimov: The Complete Stories, Vol.  1" (1990).  It was Asimov's favorite short story of his own authorship, and is one of a loosely connected series of stories concerning a fictional computer called Multivac.  The story overlaps science fiction, theology, and philosophy. Foundation's Edge (1982) is a science fiction novel by American writer Isaac Asimov, the fourth book in the "Foundation" Series.  It was written more than thirty years after the stories of the original "Foundation" trilogy, due to years of pressure by fans and editors on Asimov to write another, and, according to Asimov himself, the amount of the payment offered by the publisher.  It was his first novel to ever land on "The New York Times" best-seller list, after 262 books and 44 years of writing.  "Foundation's Edge" won both the Hugo Award for Best Novel in 1983 and the Locus Award for Best Science Fiction Novel in 1983, and was nominated for the Nebula Award for Best Novel in 1982. The "Foundation" series is a science fiction book series written by American author Isaac Asimov.  For nearly thirty years, the series was a trilogy: "Foundation", "Foundation and Empire", "Second Foundation".  It won the one-time Hugo Award for "Best All-Time Series" in 1966.  Asimov began adding to the series in 1981, with two sequels: "Foundation's Edge", "Foundation and Earth", and two prequels: "Prelude to Foundation", "Forward the Foundation".  The additions made reference to events in Asimov's "Robot" and "Empire" series, indicating that they were also set in the same fictional universe. Norby is a fictional robot created by Janet Asimov and Isaac Asimov who stars in his own series of children's science fiction books, "The Norby Chronicles".  His first appearance was in the 1983 book "Norby, the Mixed-Up Robot", in total he appeared in 11 novels in the 'Norby' series.  According to Isaac Asimov, although Janet Asimov did 90% of the work, his "name was wanted on the book for the betterment of sales [and he] went over the manuscript and polished it a bit." "Robbie" is a science fiction short story by American writer Isaac Asimov.  It was his first robot story and writing commenced on June 10, 1939.  It was first published in the September 1940 issue "Super Science Stories" magazine as "Strange Playfellow", a title that was chosen by editor Frederik Pohl and described as "distasteful" by Asimov.  A revised version of "Robbie" was reprinted under Asimov's original title in the collections "I, Robot" (1950), "The Complete Robot" (1982), and "Robot Visions" (1990).  "Robbie" was the fourteenth story written by Asimov, and the ninth to be published.  The story is also part of Asimov's "Robot" series, and was the first of Asimov's positronic robot stories to see publication. Isaac Asimov's Robot City is a series of novels written by various authors and loosely connected to Isaac Asimov's "Robot" series.  It takes place between "The Robots of Dawn" and "Robots and Empire".  Each volume is complete in itself, but they form a continuing series.  The novels were written in response to a writing challenge issued by Asimov to write a series involving the Three Laws of Robotics, which brought about a collaboration of several authors.  Asimov provided outlines for stories which filled in the gap between Asimov's own robot stories and his "Foundation" series, explaining the disappearance of the robots prior to the establishment of the galactic empire. " Isaac Asimov's Robots and Aliens" followed in this series, with the same protagonists and many other characters.  The common theme of all books of both series is the interaction between the characters and autonomous cities run and populated by robots (the "robot cities" of the series title).  Robot City was also released as a mystery game for the PC in 1995.  The player takes the role of Derec.
Answer: The "Foundation" series