Final answer:
After analyzing the data, statements A (the mean is about 61°F), B (the median is 57°F), and C (the modes are 57°F and 72°F) are all correct. The statement that is not true is D, "Not Here," since we have verified the other options.
Step-by-step explanation:
In order to determine which statement about the daily high temperatures in Chicago during one week in October is not true, we first need to calculate the mean (average), median, and mode of the given temperatures (48°F, 57°F, 55°F, 64°F, 57°F, 72°F, and 72°F).
To find the mean, add all temperatures together and divide by the number of temperatures:
(48 + 57 + 55 + 64 + 57 + 72 + 72) / 7 = 425 / 7 ≈ 60.7°F
So, the mean is about 61°F, which makes statement A true.
To find the median, the temperatures must be listed in numerical order: 48, 55, 57, 57, 64, 72, 72. The middle value is the fourth temperature, which is 57°F, making statement B true as the median is 57°F.
For the mode, we look for the numbers that appear most frequently. In this case, 57°F and 72°F both appear twice. Thus, the modes are 57°F and 72°F, which confirms that statement C is true.
Since all provided statements (A, B, and C) are true, the answer is D, but without additional context, we cannot determine what "Not Here" is referring to.