Final answer:
The mean of the data set (6, 9, 15, 22, 30, 36) is found by adding all the numbers together and dividing by the number of values in the data set, resulting in a mean of c. 19.7.
Step-by-step explanation:
To determine the mean of the given data set (6, 9, 15, 22, 30, 36), you need to follow these steps:
- Add up all the numbers: 6 + 9 + 15 + 22 + 30 + 36 = 118.
- Count how many numbers there are in the data set, which in this case is 6.
- Divide the sum by the count of numbers: 118 divided by 6 equals approximately 19.7.
Therefore, the mean of the data rounded to the nearest tenth is 19.7, which corresponds to option C.