Calculating the Median of a Distribution
To calculate the median of a distribution, you can follow these steps:

1. Determine the Type of Data
- Before calculating the median, it is important to understand the type of data you are dealing with. Is it grouped data or ungrouped data?

2. Grouped Data
- If you are working with grouped data, you can find the median by using the formula:
Median = L + [(n/2 - F) * w]/f
Where:
L = Lower boundary of the median class
n = Total number of observations
F = Cumulative frequency of the class before the median class
w = Width of the median class
f = Frequency of the median class

3. Ungrouped Data
- For ungrouped data, arrange the data in ascending order and find the middle value. If there is an odd number of observations, the median is the middle value. If there is an even number of observations, the median is the average of the two middle values.

4. Using a Frequency Polygon or Histogram
- A frequency polygon or histogram can help visualize the distribution of data. While these graphs do not directly give the median, they can provide insights into the shape of the distribution, making it easier to identify the median class for grouped data.
Therefore, while a frequency polygon or histogram can provide valuable information about the distribution of data, the actual calculation of the median involves different steps depending on the type of data being analyzed.