Question

Find the mean of the data set: 45, 137, 94, 173, 154, 72, 112, 94, 191

Answer 1

To find the mean, you need to know how many numbers there are. You also need to know the sum of all the numbers.
There are 9 numbers.
The sum of the numbers is 1072.
The mean is the sum divided by the count.
The mean is 1072/9.
The mean is approximately 119.111