Answer:
Mean = 2.21
Median = 2
Explanation:
The total frequency is 4 + 8 + 6 + 1 = 19.
The mean is the average (total days per total orders):
(4×1 + 8×2 + 6×3 + 1×4) / 19 = 2.21
Since there are 19 orders, the median is the 10th order, which took 2 days to ship.