Find the median:

3, 5, 7, 4, 3,1

3.5

Step-by-step explanation:

The median is the middle number when the numbers are aligned from smallest to largest

3, 5, 7, 4, 3,1

1,3, 3, 4,5,7

The middle is between the 3 and the 4 so average the 3 and the 3

(3+4) / 2 = 7/2 = 3.5

The median is 3.5