Sticking with last module's coffee theme, how might we know if people like a particular kind of coffee more than another? There are a number of methods we could use to collect relevant data, and we'll use a simple one: self-reported ratings after consuming different types of coffee. Using a 5-point scale where 5=excellent and 1=awful, let's look at some data we gathered on Coffee Brand #1 vs. Coffee Brand #2:

Participant	Coffee Brand	Rating
1	1	5
2	1	2
3	1	3
4	1	5
5	1	5
6	1	4
7	1	3
8	1	5
9	1	5
10	1	3
11	2	3
12	2	2
13	2	5
14	2	5
15	2	1
16	2	2
17	2	2
18	2	4
19	2	5
20	2	1

Please calculate the mean and standard deviation (descriptive statistics) of the ratings for each brand of coffee.