To find the median of the given data, we first need to list all the numbers in the data set. The numbers provided are:
- Rows of dots: Representing data points but not providing numerical values.
- The last row contains the numbers: 2, 3, 4, 5, 6.
Thus, the data set consists of the numbers: 2, 3, 4, 5, 6.
To calculate the median, follow these steps:
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Arrange the numbers in ascending order (which they already are): \(2, 3, 4, 5, 6\)
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Count the total number of values: There are 5 values in total.
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Since 5 is an odd number, the median is the middle number in the ordered list. The middle number can be found by taking the position: \[ \text{Median position} = \frac{n + 1}{2} = \frac{5 + 1}{2} = 3 \]
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The 3rd number in the list \(2, 3, 4, 5, 6\) is 4.
Thus, the median of the data is \( \boxed{4} \).