= Will Fithian
{c}
<Will Fithian> authored statistical teaching material on sufficiency. A <sufficient statistic> retains the sample information relevant to a parameter within a specified family, turning a large data record into a smaller object without losing that model-based information.<Sufficiency (Stat 210a, Fall 2025) by Will Fithian>[author attribution and the described mathematical development]{ref}
\Image[https://www.stat.berkeley.edu/~wfithian/willheadwithbeard.png]
{title=Portrait of <Will Fithian>}
{description=Portrait from the https://www.stat.berkeley.edu/~wfithian/index.html[UC Berkeley author homepage].}
{width=220}
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