t
-t
2
-2
Correct answer is C
Mean x = \(\frac{\sum x}{n}\) = [(2 - t) + (4 + t) + (3 - 2t) + (2 + t) + (t - 1)] \(\div\) 5 = [11 - 1 + 3t - 3t] \(\div\) 5 = 10 \(\div\) 5 = 2
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