The median of the given marks is 76.5.

Would you like any details or have any questions about this calculation? Here are some questions you might consider asking next:

1. How do you calculate the mean of these marks?
2. What is the mode of the given marks?
3. Can you provide a box plot for this data set?
4. How do you calculate the standard deviation of these marks?
5. Can you show the range of the given marks?

Tip: The median is a useful measure of central tendency that is less affected by outliers compared to the mean.