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Which of the following data sets has a first quartile Q₁ value of 2?
Select one:
a. 9, 8, 9, 9, 6, 4, 2
b. 2, 1, 3, 4, 4, 2, 6
c. 3, 3, 3, 3, 4, 4, 5
d. 1, 8, 6, 1, 3, 4, 2