Due to climate change, a certain place experienced an extreme change in weather. The following are the recorded temperatures: 15˚C, 1˚C, -4˚C, 3˚C, -10˚C, -7˚C, and 21˚C. What is the average temperature of all the given days?



The average temperature of all the given days is 19/7˚C or 2.7˚C
The average temperature of all the given days is -19/7˚C or -2.7˚C
The average temperature of all the given days is 61/7˚C or 8.7˚C
The average temperature of all the given days is -61/7˚C or -8.7˚C