Question

What is the standard deviation of data set
20 20 28 62 68 71 77 85 95 99

Answer 1

28.30282671

Explanation:

Step 1: Find the mean.

Step 2: For each data point, find the square of its distance to the mean.

Step 3: Sum the values from Step 2.

Step 4: Divide by the number of data points.

Step 5: Take the square root.