Step 1: Understanding Ogive Intersection
In statistics, the intersection of the less than ogive and the more than ogive gives the median of the data.
Step 2: Identify the Median
From the given data, the two ogives intersect at \( (15.5, 20) \). The x-coordinate of this point represents the median.
\[ \text{Median} = 15.5 \]
Final Answer: \( \mathbf{15.5} \)
The point where the 'less than ogive' and 'more than ogive' intersect gives the median of the data on the x-axis.
The y-coordinate represents the cumulative frequency at the median.
Given that the intersection point is (15.5, 20), the x-coordinate of this point is 15.5.
Therefore, the median of the data is 15.5.
Final Answer: The final answer is $\boxed{15.5}$