Use a nonparametric test to test the claim that the three samples are from populations with the same median departure delay time.

The values are departure delay times (minutes) for American Airlines flights from New York to Los Angeles. Negative values correspond to flights that departed early.

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Flight 1 (min) Flight 19 (min) Flight 21 (min) 0 23 19 -44 73 01 18 60 142 -1111 47 13