Final answer:
To find the median for a frequency distribution, organize the data into a table, calculate cumulative frequencies, and use a formula.
Step-by-step explanation:
To find the median for a frequency distribution, follow these steps:
- Organize the data into a frequency table, with two columns: class intervals and frequencies.
- Calculate the cumulative frequency for each class interval.
- Identify the interval that contains the median value (usually the one with the highest cumulative frequency less than or equal to half the total frequency).
- Use the formula (L + ((n/2) - F) / f) x w, where L is the lower boundary of the median interval, n is the total frequency, F is the cumulative frequency of the previous interval, f is the frequency of the median interval, and w is the width of the interval, to calculate the median.