Final answer:
Approximately 50% of the data set lies between the median and the maximum value.
Step-by-step explanation:
The amount of a data set that lies between the median and the maximum value depends on the distribution of the data. In a symmetrical distribution, approximately 50% of the data will lie between the median and the maximum. However, in skewed distributions, this percentage may differ.
For example, if the data set is symmetrical and the median is 40, then approximately 50% of the data will lie between 40 and the maximum value of 300.