Attendance The teachers of a school collected data on the self-reported numbers of sick leaves taken by students in the months of September and October.
![1055_Attendance.png](https://secure.tutorsglobe.com/CMSImages/1055_Attendance.png)
![810_Attendance1.png](https://secure.tutorsglobe.com/CMSImages/810_Attendance1.png)
a. Compare the means in a sentence or two.
b. Compare the standard deviation in a sentence or two.