The graph above shows the two ogives (cumulative frequency graphs):

1. Less than Ogive: This curve represents the cumulative frequency "less than" for each class interval. It plots the upper class boundaries against the cumulative frequency (less than).

2. Greater than Ogive: This curve shows the cumulative frequency "greater than" for each class interval. It plots the lower class boundaries against the cumulative frequency (greater than).

Both curves converge towards the total number of observations at their extremes. The point where they intersect or closely align can help visually estimate the median.

Would you like to explore any other calculations based on this table?

Five related questions:

1. How can we estimate the mode from this table?
2. What insights can we gain from the shape of the two ogives?
3. How can we calculate the mean from this grouped frequency distribution?
4. How do the less than and greater than ogives help in understanding percentiles?
5. What is the significance of class boundaries in constructing an ogive?

Tip: To locate the median graphically, find the intersection of the horizontal line drawn at $\frac{N}{2}$ and the "Less than Ogive".