The low temperatures during one week in January were 2°, −3°, −9°, −11°, 1°, −8°, and −9°. What was the median low temperature that week?

To find the median, we need to order the temperatures from least to greatest:

-11°, -9°, -9°, -8°, -3°, 1°, 2°

There are seven temperatures, so the median will be the fourth temperature in this list, which is -8°.

Therefore, the median low temperature that week was -8°.