Final answer:
To calculate the mean of the data set (13, 13, -5, -5, 13, 11, -5), add all the numbers together to get a sum of 35 and then divide by the total number of data points, which is 7. The mean is therefore 5.
Step-by-step explanation:
To determine the mean of the given data set - 13, 13, -5, -5, 13, 11, -5 - we need to follow these steps:
- Add up all the numbers in the data set.
- Divide the sum by the total number of data points in the set.
Let's perform the calculation:
Sum of data = 13 + 13 + (-5) + (-5) + 13 + 11 + (-5) = 35
Number of data points = 7
Mean = Sum of data / Number of data points = 35 / 7 = 5
So, the mean of the given data set is 5.