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: The [[results]] of an [[investigation]] may be [[Reliable|unreliable]] if a small '''sample size''' is used.
: A small '''sample size''' increases the effect of [[anomaly|anomalous]] [[results]] on the [[conclusion]] of the [[investigation]].
: A large '''sample size''' allows [[Mean Average|averages]] to be taken to reduce the [[effect]] of [[Random Error|random errors]].
: A large '''sample size''' makes it easier to spot [[anomaly|anomalous]] [[results]].