Start with x = 100 and add four x values to make a sample of five data such that the standard deviation of these data equals 0

In order to create a sample of five data points with a standard deviation of 0, all the data points must be identical.

Let's start with x = 100, and we will add four more data points with the same value.

So, the sample of five data points with a standard deviation of 0 would be:

x = 100, 100, 100, 100, 100

With all the data points being the same, the standard deviation is equal to 0 since there is no variability in the data.