\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
Let \(X_1, X_2, X_3, X_4\) be the responses of four people to the question "Do you plan to vote for Candidate A?", where \(X_i=1\) represents "Yes" and \(0\) represents "No". Let \(\overline{X}_4 = \frac{X_1 + X_2 + X_3 + X_4}{4}\).
  1. What does \(\overline{X}_4\) represent?
  2. What possible values can be taken by \(\overline{X}_4\)?

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