I'll open the Excel file you uploaded and analyze its contents to find the median. Please hold on for a moment.The Excel file contains one sheet named ".". I'll load the data from this sheet to see its contents and find the median of the relevant data.The Excel file contains a single column of data. The values in this column are:

• 18, 10, 15, 4, 20, ...

I'll calculate the median of this data.The median of the data is 11.0.

Would you like more details on how this was calculated, or do you have any other questions?

Here are 5 related questions you might consider:

1. What is the difference between the mean and the median?
2. How would the median change if additional values were added to the dataset?
3. Can the median be calculated for categorical data?
4. What are the advantages of using the median over the mean in data analysis?
5. How do you find the median for grouped data?

Tip: The median is less affected by outliers and skewed data compared to the mean, making it a better measure of central tendency in certain cases.