If two samples contain the same number of observations,then the data must be paired.

Question

Quizplus · Accepted Answer

Having the same number of observations in two samples does not necessarily mean the data must be paired. Paired data typically arise in studies where each observation in one sample is uniquely matched with an observation in the other sample based on some criteria (e.g., before-and-after measurements on the same subjects), which is not guaranteed by merely having an equal number of observations.

If Two Samples Contain the Same Number of Observations,then the Data