Final answer:
The mean is 0.1667 and the standard deviation is 1.589.
Step-by-step explanation:
To find the mean, we use the formula:
mean = sum of all observations / total number of observations
In this case, the sum of (x-5) is 3 and the total number of observations is 18. Therefore,
mean = 3 / 18 = 1/6 = 0.1667
To find the standard deviation, we use the formula:
standard deviation = sqrt((sum of (x-5)^2) / (total number of observations - 1))
In this case, the sum of (x-5)^2 is 43 and the total number of observations is 18. Therefore,
standard deviation = sqrt(43 / 17) = sqrt(2.5294) = 1.589