The temperature readings for 20 days at4 AM at a local ski resort were recorded as follows:
|
3°
|
16°
|
3°
|
18°
|
-5°
|
-7°
|
22°
|
-3°
|
-6°
|
-4°
|
|
23°
|
23°
|
7°
|
17°
|
28°
|
17°
|
11°
|
20°
|
28°
|
-1°
|
What was the average of the recorded temperatures for these20 days? Do not round your answer.