NEED HELP IN STATISTIC QUESTION(URGENT)

[ChesterMY]

So tomorrow's my exam and till now I still cannot seem to sort them all out thus I'm here, seeking for helps from experts.
I need answer, formulas used and some simple explanation.
Your kindness and helps would be MUCH appreciated! Thanks in advanced.

 

[Dr.Peterson]

Please at least give us some idea of where you need help. We aren't going to give you a complete lesson on all these topics, starting from nothing!

Show us what you can do, and tell us what you need to know that you don't. Formulas can be found in your textbook or class notes ...

 

[HallsofIvy]

While I know what "mean", "median", "variance", and "standard deviation" mean I don't know what "range" means here (unless it is "0 to 3" which does not require the calculation of any of the above).