William “Bill” Wiersma, 83, of Holland, a former University of Toledo professor of research and statistics in the college of education, who wrote or collaborated on seven textbooks and was recognized for his knowledge in research and statistics, died on April 25 at Hospice of Northwest Ohio in Perrysburg Township.
His death followed a stroke he suffered while in hospice, said his wife, Joan Wiersma.
Mr. Wiersma retired from the university in 1987, when he was named professor emeritus, but continued teaching part time for 14 years.
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