September 12, 1981 - The birth of the pioneer organization in the UP School of Statistics, the UP Statistical Society.

The Board of Directors upon its foundation was composed of the President, Vice-President, Secretary, Business Manager, Education and Research Division Manager, Personnel Division Manager, and the Public Relations Division Manager.

The first adviser of UP StatSoc was Dr. Ana Maria L. Tabunda. She is currently the Executive Director of Pulse Asia and a professor of the School of Statistics.

In celebration of its first anniversary in 1982, UP StatSoc sponsored a concert of the popular trio, the APO Hiking Society.

Also in 1982, Stat-is-Eeks!, an inter-university Statistics quiz show was introduced. And its very 1st champion was no wonder, a Statistics major, namely Ms. Julie M. Ico.

In 1985, the very 1st Amendment in the Constitution came about. The line up of the Board of Directors was changed and is now composed of the President, Internal VP, External VP, Secretary, and the chairpersons of the six standing committees namely: Communications, Education and Research, External, Finance, Internal, and Personnel.

The 1st male president of the UP StatSoc was elected in 1985 in the person of Mr. Nicco Emmanuel de Jesus.

In 1985, Peggy Mae Hwang graduated as UP Diliman’s Valedictorian. She was the second Summa Cum Laude from UP StatSoc.

1986 – The Stat Child, a free tutorial service in Math and English subjects among elementary and high school students, in Balara area was introduced.

1987 - Stat-is-Eeks! became an inter-university Statistics quiz show for non-statistics majors and have continually drawn interest from the prestigious colleges and universities around Metro Manila and nearby provinces such as Laguna, Cavite, Rizal, Bulacan, and Pampanga. It was first held in the Nicanor Abelardo Theater.

1988- UP StatSoc sponsored the movie Off Beat in cooperation with UP School of Statistics Student Council at the Rizal Theater. The yearly Bingo Socials started the same year.

1989 – UP StatSoc sponsored a concert of then popular group NEOColours entitled Colours Alive!

1990 - UP StatSoc held an outreach program entitled Orphan’s Day where they visited orphans in White Cross and then brought them to the Executive House

In order to raise funds to support the organization’s planned activities, a group of StatSocers joined the Sunday noontime game show Ready, Get Set, Go!

In November 1997, the first Stat Wars took place, sports fest among the UPLB Stats, UP Variates, and UP StatSoc. It was created in order to foster closer ties among the said organizations.