A Simple Histogram Software (Libre Calc File) for Course Grading

After a long time, I am writing a new post on this blog. This is the first long vacation I am having after my PhD. So, I thought about learning a little bit more about spreadsheets. For a while, I have been thinking about creating a simple .ods file for course grading. Yesterday, I had some free time to ponder over it and came up with this simple file which can do most of the basic things related to grading:

https://drive.google.com/file/d/0B76qmOiQuL6NclJOYi02UWRVVEU/view?usp=sharing

Remember that this file works only with Libre Office Calc. Of course, you can re-implement this file in Excel with a little effort.