Joseph F. Daly, 76, a statistician and authority on computers who was a retired associate director of the U.S. Census Bureau, died of emphysema Sept. 12 at his home in New Carrollton.

Dr. Daly joined the Census Bureau in 1946, helped in the introduction and expansion of its computer program, and was awarded a 1964 exceptional service medal. He retired as associate director for research and development in 1971. He was a statistics and computer consultant until retiring a second time about 1980.

He was a fellow of both the American Statistical Association and the Institute of Mathematical Statistics. He was a member of St. Matthias Catholic Church in Lanham.

Dr. Daly was a native of Washington and a Navy veteran of World War II. He was a graduate of Catholic University, where he also earned a master's degree in mathematics. He earned a doctorate in mathematical statistics at Princeton University.

Survivors include his wife, the former Charlotte Gartner, and a son, Christopher, both of New Carrollton; a brother, Edward F., of Silver Spring, and a sister, Sister Rosa Daly of the Sisters of Charity who lives in Emmitsburg, Md.

WALTER K. JOHNSON,

82, a retired civil engineer who had worked at the Air Force Systems Command at Andrews Air Force Base, died of a heart attack Sept. 10 at his home in Jessup.

Mr. Johnson had worked for 18 years for the Air Force Systems Command at Andrews before he retired in 1970, and he had previously worked for the Research and Development Command in Baltimore and for the Veterans Administration in Richmond and Washington. He moved to the Washington area shortly after World War II.

He was born in Lawrence, Mass., and graduated from the Massachusetts Institute of Technology. Before World War II he worked for an engineering firm in Boston and for the Tennessee Valley Authority. He served in the Army during the war.

Mr. Johnson remained in the Army Reserve after the war, and he retired as a major in 1965.

He was a member of the American Society of Civil Engineers and the Wesley United Methodist Church in Jessup.

Survivors include his wife, Peggy Johnson of Jessup; one daughter, Ann Rodgers of Glen Burnie; two sons, Walter K. Johnson Jr. of Frederick and Joseph S. Johnson of Laurel; two sisters, Emily Heald of Methuen, Mass., and Edith Martin of Belmont, Mass., and four grandchildren.

VIRGINIUS R. GILL,

86, a retired cost analyst with the government who was a past master of Perseverence Masonic Lodge No. 208 in Indian Head, died Sept. 10 at Loudoun Memorial Hospital in Leesburg. He had cancer and diabetes.

Mr. Gill, a resident of Leesburg, was born in Richmond. He grew up in Washington and graduated from McKinley Technical High School.

In 1924, he went to work for what is now the Naval Ordnance Station at Indian Head. In 1943, he transferred to the Federal Maritime Board. He retired in 1961 when the board's functions were transferred to the Commerce Department.

Mr. Gill lived in Indian Head while he worked for the Navy and in Silver Spring when he was with the Maritime Board. He had lived in Leesburg since 1967.

He was a Shriner, a member of the Royal Order of Scotland and a volunteer with the Boy Scouts.

Survivors include his wife, Ethel L. Gill of Leesburg; three children, Robert L. Gill of Pensacola, Fla., and Donald L. Gill and Shirley V. Forster, both of Castroville, Calif.; eight grandchildren, and seven great-grandchildren.

ELIZABETH T. CORMACK,

64, who had given private lessons in ceramics in her home in Seabrook, Md., for the past 25 years, died Sept. 9 at Prince George's General Hospital of a pulmonary embolism.

Mrs. Cormack was born in Yonkers, N.Y., and raised in Miami Beach. She graduated from Mary Washington College in Fredericksburg, Va., where she majored in fine arts.

She moved to the Washington area in the early 1950s and worked briefly as a librarian at the National War College.

Mrs. Cormack was a member of St. George's Episcopal Chapel in Glenn Dale.

Survivors include her husband, Charles M. Cormack Jr. of Seabrook; three children, Margaret (Molly) Hollis of Salisbury, N.C., Charles M. Cormack III of Greensboro, N.C., and Dolores Derrington of Burke; one sister, Juanita T. Gorrell of Greensboro, and one grandchild.