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The test scores of 15 students are listed below. Find the lower quartile (Q1) by hand. 40 46 54 55 58 63 65 71 73

The test scores of 15 students are listed below. Find the lower quartile (Q1) by hand.

40 46 54 55 58

63 65 71 73 78

85 87 90 94 95

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