The table below shows the lowest temperature, in degrees Fahrenheit, on each of 5 days for a city. What is the mean lowest temperature, in degrees Fahrenheit, in the city for those 5 days?
To find the mean, or average, temperature, we need to add up all the temperatures and divide by the number of days:
$$\text{Mean temperature} = \frac{20 + 18 + 14 + 21 + 16}{5} = \frac{89}{5} = 17.8$$
Therefore, the mean lowest temperature for those 5 days in the city is 17.8 degrees Fahrenheit.