How is the median 1 for the asymmetrical data shown in this slide? Will it not be 2.5?

Median refers to that data point in a sorted dataset in ascending order where 50% of data lies below it. .16807 + .36015 = 0.52822 which means that 50% of data will lie below a certain occurrence of 1.

.16807 + .36015 = 0.52822