One of the best methods to compare numbers/data is a bar graph. They are bars that are used in vertical or horizontal form to represent numbers/data. The length of the bar is used to display the value and the color of the bar is used to label what the number is representing. Bar graphs are the best and simplest way to represent and compare data among different groups easily. Bar graphs can show the major changes in numbers and values in data over time.
This was a short and sweet blog post. I really like the bar graph you chose because it is very colorful and eye catching. When learning about data visualizations it is easiest to understand concepts that are simple before diving into more complex subjects, so great choice with the birthdays. One critique I have is to expand on other possible ways to show this data, to further support why a bar graph is the most appropriate. Good job!