A university published the following distribution of students enrolled in the various colleges:
![945_distribution of students.png](https://secure.tutorsglobe.com/CMSImages/945_distribution of students.png)
1. Construct a bar chart of these data.
2. On ten days, a bank had 18, 15, 13, 12, 8, 3, 7, 14, 16, and 3 bad checks. Find the mean, median, variance, and standard deviation of the number of bad checks.